My colleague (Richard Ney) has already been in touch with you on a couple of 
other issues we’ve seen in the past. Our development been trying to track down 
some new issues we’ve been seeing on one of our pre-prod environments where 
we’ve been having consistent failures very often (every day or every 2-3 days), 
even if load/number of transactions are very light. We’re running a 2 data 
center deployment with 3 nodes in each data center. Our tables are setup with 
replication factor = 2 and we have 16G dedicated to the heap with the G1GC for 
garbage collection. Our systems are AWS M4.2xlarge with 8 CPUs and 32GB of RAM 
and we have 2 general purpose EBS volumes on each node of 500GB each. Once we 
hit this it seems like the only way to recover is to shutdown the cluster and 
restart. Running repairs after the restart often results in failures and we 
pretty much end up having to truncate the tables before starting up clean 
again. We are not sure if the two are inter-related. We pretty much see the 
same issue on all the nodes. If anyone has any tips or any suggestions on how 
to diagnose this further, it will help a great deal! The issues are:



Issue 1: Once the errors occur they just repeat for a bit followed by the 
errors in issue 2.

INFO  [CompactionExecutor:165] 2017-01-08 08:32:39,915 AutoSavingCache.java:386 
- Saved KeyCache (63 items) in 5 ms
INFO  [IndexSummaryManager:1] 2017-01-08 08:32:41,438 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
INFO  [HANDSHAKE-ahldataslave4.bos.manhattan.aspect-cloud.net/10.184.8.224] 
2017-01-08 09:30:03,988 OutboundTcpConnection.java:505 - Handshaking version 
with ahldataslave4.bos.manhattan.aspect-cloud.net/10.184.8.224
INFO  [IndexSummaryManager:1] 2017-01-08 09:32:41,440 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
WARN  [SharedPool-Worker-9] 2017-01-08 10:30:00,116 BatchStatement.java:289 - 
Batch of prepared statements for [manhattan.rcmessages] is of size 9264, 
exceeding specified threshold of 5120 by 4144.
INFO  [IndexSummaryManager:1] 2017-01-08 10:32:41,442 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
INFO  [IndexSummaryManager:1] 2017-01-08 11:32:41,443 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
INFO  [CompactionExecutor:162] 2017-01-08 12:32:39,914 AutoSavingCache.java:386 
- Saved KeyCache (108 items) in 4 ms
INFO  [IndexSummaryManager:1] 2017-01-08 12:32:41,446 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
INFO  [IndexSummaryManager:1] 2017-01-08 13:32:41,448 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
INFO  [IndexSummaryManager:1] 2017-01-08 14:32:41,450 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
INFO  [IndexSummaryManager:1] 2017-01-08 15:32:41,451 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
INFO  [CompactionExecutor:170] 2017-01-08 16:32:39,915 AutoSavingCache.java:386 
- Saved KeyCache (109 items) in 4 ms
INFO  [IndexSummaryManager:1] 2017-01-08 16:32:41,453 
IndexSummaryRedistribution.java:74 - Redistributing index summaries
WARN  [SharedPool-Worker-4] 2017-01-08 17:30:45,048 
AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
Thread[SharedPool-Worker-4,5,main]: {}
java.lang.AssertionError: null
at org.apache.cassandra.db.rows.BufferCell.<init>(BufferCell.java:49) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.db.rows.BufferCell.tombstone(BufferCell.java:88) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.db.rows.BufferCell.tombstone(BufferCell.java:83) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.db.rows.BufferCell.purge(BufferCell.java:175) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.rows.ComplexColumnData.lambda$purge$107(ComplexColumnData.java:165)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.utils.btree.BTree$FiltrationTracker.apply(BTree.java:650) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.utils.btree.BTree.transformAndFilter(BTree.java:693) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.utils.btree.BTree.transformAndFilter(BTree.java:668) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.rows.ComplexColumnData.transformAndFilter(ComplexColumnData.java:170)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.rows.ComplexColumnData.purge(ComplexColumnData.java:165)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.rows.ComplexColumnData.purge(ComplexColumnData.java:43) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.db.rows.BTreeRow.lambda$purge$102(BTreeRow.java:333) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.utils.btree.BTree$FiltrationTracker.apply(BTree.java:650) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.utils.btree.BTree.transformAndFilter(BTree.java:693) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.utils.btree.BTree.transformAndFilter(BTree.java:668) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.db.rows.BTreeRow.transformAndFilter(BTreeRow.java:338) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.db.rows.BTreeRow.purge(BTreeRow.java:333) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.partitions.PurgeFunction.applyToRow(PurgeFunction.java:88)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:116) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:133)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:89)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:79)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.partitions.UnfilteredPartitionIterators$Serializer.serialize(UnfilteredPartitionIterators.java:294)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.ReadResponse$LocalDataResponse.build(ReadResponse.java:134)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:127)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:123)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.ReadResponse.createDataResponse(ReadResponse.java:65) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.db.ReadCommand.createResponse(ReadCommand.java:292) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.db.ReadCommandVerbHandler.doVerb(ReadCommandVerbHandler.java:50)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64) 
~[apache-cassandra-3.3.0.jar:3.3.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_111]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
 [apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) 
[apache-cassandra-3.3.0.jar:3.3.0]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]



Issue 2:

WARN  [SharedPool-Worker-2] 2017-01-09 05:18:58,880 
AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
Thread[SharedPool-Worker-2,5,main]: {}
java.lang.RuntimeException: java.lang.NullPointerException
at 
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2461)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_111]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
 [apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) 
[apache-cassandra-3.3.0.jar:3.3.0]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]
Caused by: java.lang.NullPointerException: null
WARN  [SharedPool-Worker-1] 2017-01-09 05:19:14,220 
AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
Thread[SharedPool-Worker-1,5,main]: {}
java.lang.RuntimeException: java.lang.NullPointerException
at 
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2461)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_111]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
 [apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) 
[apache-cassandra-3.3.0.jar:3.3.0]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]
Caused by: java.lang.NullPointerException: null
WARN  [SharedPool-Worker-1] 2017-01-09 05:19:29,876 
AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
Thread[SharedPool-Worker-1,5,main]: {}
java.lang.NullPointerException: null
WARN  [SharedPool-Worker-1] 2017-01-09 05:19:45,217 
AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
Thread[SharedPool-Worker-1,5,main]: {}
java.lang.NullPointerException: null
WARN  [SharedPool-Worker-2] 2017-01-09 05:20:00,241 
AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
Thread[SharedPool-Worker-2,5,main]: {}



Issue 3: Periodic warnings about leaks (this was during a repair) - we had an 
OOM occurrence about a week ago:

INFO  [Thread-9] 2017-01-09 15:01:11,828 RepairSession.java:237 - [repair 
#7593ad41-d67c-11e6-a76f-f1d6fd321f0d] new session: will sync 
ahldataslave1.bos.manhattan.aspect-cloud.net/10.184.8.151, /10.184.8.137, 
/10.184.8.219, /10.184.8.224 on range 
[(4815877001221178276,4825317823493984218], 
(3375739423664266689,3378070249246945856], 
(-7393599445401300009,-7393031105803218575], 
(-8130357422229977058,-8127934975152946543], 
(-4611683212167667055,-4597307445147354114], 
(4829191785668845783,4847928037092763493], 
(5522544388079333104,5528633388915935404], 
(1021118078158195547,1032730403399741255], 
(-20739833830226207,-14719054523073734], 
(-6205449048248449637,-6203730539323274527], 
(45435932670861622,69554714149031706], (148647262653106287,181904829526383862], 
(-854190757691833472,-854087983203765538], 
(-7714687510919982336,-7700463340346726648], 
(-360739232930366185,-339249720009847821], 
(524595904743716879,537371267474489752], 
(8185882494697143291,8187345181917158585], 
(181904829526383862,190096166859570216], 
(-1152328644109499972,-1134711681717758961], 
(-586016578220869954,-566687033455187734], 
(-4597307445147354114,-4541034774723552824], 
(-4488655272471923458,-4481233629800439836], 
(3111053603069111732,3121096557789915147], 
(-1167831376731724655,-1152328644109499972], 
(-6302582962631272172,-6290099341099600242], 
(8082429902489189721,8084233962135014968], 
(-2781993705200227829,-2777492754784519178], 
(5996816756578981045,6022011570976925279], 
(4404919629779433734,4422232637329318322], 
(-643317786131863042,-611582394998065454], 
(4514099138058135901,4514906323961126580], 
(7273471227296986256,7316794306200362675], 
(4462984376163219141,4464984714163480487], 
(-2390509810947844616,-2382282465250439153], 
(-7773729052257068390,-7772926086336061342], 
(-161569209320145017,-149914302996366392], 
(1392011488470148469,1403436343776848669], 
(546940383302067460,574197777751440495], 
(6624568645457217871,6629411218351717560], 
(-1134711681717758961,-1133755953039077472], 
(-7248281701751445296,-7243217407431962906], 
(2374653705052569734,2377396978942737768], 
(5619550734131192401,5628464353424177974], 
(-192925818286153751,-181902834109073167], 
(5896301416900157412,5911734690958039138], 
(4422232637329318322,4462984376163219141], 
(-4524564105581793254,-4504900851715014673], 
(-2115528876758613050,-2112322288682500569], 
(5504098260114685179,5515264579319185925], 
(35614519826275404,45435932670861622], 
(-855913784497695841,-854190757691833472], 
(5736245318761313405,5738445441111493493], 
(4807463771329802801,4815877001221178276], 
(-2884278504117308670,-2881329894351532736], 
(-207545241327995479,-207389332352346254], 
(-181902834109073167,-172819893538312319], 
(-7636862515759014032,-7626686102011136779], 
(-8140870857704067579,-8130357422229977058], 
(-2342122616740401439,-2335433185444036860], 
(-2881329894351532736,-2880349360092682175], 
(-611582394998065454,-587918354120388686], 
(-7320730625612121443,-7317644215584737598], 
(-13045270760172222,8260384715982984], 
(-8668935926714005039,-8657580917928283146], 
(8260384715982984,35614519826275404], 
(2861067483327829799,2864748323206840859], 
(3127114336475141934,3139163273099443478], 
(-7657420721193956821,-7636862515759014032], 
(1032730403399741255,1032951438204062821], 
(-1133755953039077472,-1130095656542041882], 
(5515264579319185925,5522544388079333104], 
(6826479291574328528,6828593995008227175], 
(658600138550738740,680809612853177633], 
(2364271158745468459,2374653705052569734], 
(2864748323206840859,2868871349367827459], 
(-7741910906325473118,-7738712583959975589], 
(2749562470526527976,2765502980561577063], 
(4569656624441412194,4581277061087905130], 
(-1130095656542041882,-1102822102812415509], 
(2357686856375407577,2364271158745468459], 
(2875146491882456097,2913694653712675567], 
(-2365721528619247416,-2362417204623405805], 
(-7700463340346726648,-7657420721193956821], 
(-1545400958003324469,-1527145992709891047], 
(6595468060656389384,6611122695943865425], 
(-2362417204623405805,-2360989147149959339], 
(680809612853177633,691564499046700936], 
(1048818468740031469,1051848236340749987], 
(-6290099341099600242,-6284139189426371408], 
(-430511209136180745,-417631748808875679], 
(-2127191227331961211,-2115528876758613050], 
(-587918354120388686,-586016578220869954], 
(5950659959556897324,5972536818860340742], 
(7228681112293176899,7273471227296986256], 
(-92115275177849392,-73078256610822906], 
(-2150182737057335813,-2131084968707606517], 
(-5931891237188071234,-5925084712702354100], 
(1854063092500381970,1894128417137542926], 
(3139163273099443478,3144353879892041737], 
(2795130016444690338,2849989872521310320], 
(69554714149031706,73259277905023853], 
(-198884270246085916,-192925818286153751], 
(2301867852127537258,2344138511230415627], 
(-2360989147149959339,-2342122616740401439], 
(2868871349367827459,2875146491882456097], 
(-8520120040026037727,-8484758828657908805], 
(1044175704807438060,1048818468740031469], 
(3658700192210846721,3709106004630729567], 
(-8715352510373593584,-8695484052773103051], 
(4825317823493984218,4829191785668845783], 
(5881177751245354064,5896301416900157412], 
(-1557733846751863547,-1545400958003324469], 
(3764340229927726801,3772352737530248438], 
(5723087139361841478,5736245318761313405], 
(-339249720009847821,-325063001525001753], 
(4581277061087905130,4585591969590606261], 
(2849989872521310320,2861067483327829799], 
(-201641945389990466,-198884270246085916], 
(3062119490734517386,3070339219117072282], 
(6611989977644669113,6624568645457217871], 
(-6303561532875621980,-6302582962631272172], 
(-2880349360092682175,-2815907193866317595], 
(-2210673969380244356,-2200655423201071981], 
(6920406973111913689,6944396390330370813], 
(3070339219117072282,3089918739923672617], 
(1018479337556218583,1021118078158195547], 
(-22373917471115570,-20802161777184740], 
(2349224556257120691,2357686856375407577], 
(1610291395978708348,1610350862682840167], 
(-7774308296105089774,-7773729052257068390], 
(-207389332352346254,-201641945389990466], 
(-4504900851715014673,-4488655272471923458], 
(-913362829471550684,-900550299179500948], 
(574197777751440495,575687259162456966], 
(-209852186312631406,-207545241327995479], 
(3961560378473489131,4029122901768525705], 
(1059898575782522398,1065913666232086022], 
(6611122695943865425,6611989977644669113], 
(-2815907193866317595,-2781993705200227829], 
(-8149621014270042242,-8140870857704067579], 
(-999997390934570392,-998678768267637866], 
(2377396978942737768,2384267095612056863], 
(-2267001694418802171,-2210871230482048364], 
(-2131084968707606517,-2127191227331961211], 
(3144353879892041737,3183343610940682057], 
(-2210871230482048364,-2210673969380244356], 
(4399306102077085676,4404919629779433734], 
(537371267474489752,546940383302067460], 
(-7722143244670988745,-7714687510919982336], 
(3754196018068729018,3763367677110000435], 
(-5925084712702354100,-5919412889821651249], 
(4585591969590606261,4590124192625756967], 
(-1189315862160445133,-1167831376731724655], 
(-14719054523073734,-13045270760172222], 
(3772352737530248438,3791853264732937441], 
(-149914302996366392,-138596249554837825], 
(-1459586834232833970,-1455782887662096513], 
(-7626686102011136779,-7613607518487725198], 
(-2370342707880863831,-2365721528619247416], 
(1051848236340749987,1059898575782522398], 
(575687259162456966,587747968172054843], 
(1846675642540253784,1854063092500381970], 
(5911734690958039138,5950659959556897324], 
(3709106004630729567,3754196018068729018], 
(2274687735800823626,2301867852127537258], 
(3763367677110000435,3764340229927726801], 
(2765502980561577063,2768302382460911776], 
(-4835698441475193016,-4821740368643417588], 
(-4840592682190099042,-4835698441475193016], 
(-900550299179500948,-898509802837897450], 
(5972536818860340742,5996816756578981045], 
(7316794306200362675,7316948326538779302], 
(-20802161777184740,-20739833830226207], 
(-8695484052773103051,-8693825425156218047], 
(-6228811049824135380,-6205449048248449637], 
(-8522744988679262888,-8520120040026037727], 
(-1527145992709891047,-1522580222898594256], 
(1065913666232086022,1070185844169898505], 
(3121096557789915147,3127114336475141934]] for manhattan.[config, messages, 
rcmessages, csseedmessages, metadata, rqmessages]
ERROR [Reference-Reaper:1] 2017-01-09 15:01:12,481 Ref.java:202 - LEAK 
DETECTED: a reference (org.apache.cassandra.utils.concurrent.Ref$State@8520181) 
to class 
org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier@110489339:/data/manhattan/messages-5e11ec20d49411e6ac36cb64da3c5bcf/ma-1-big
 was not released before the reference was garbage collected
ERROR [Reference-Reaper:1] 2017-01-09 15:01:12,481 Ref.java:202 - LEAK 
DETECTED: a reference (org.apache.cassandra.utils.concurrent.Ref$State@2aa6af1) 
to class 
org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier@1202250944:/data/manhattan/rcmessages-5f65e360d49411e6ac36cb64da3c5bcf/ma-1-big
 was not released before the reference was garbage collected
ERROR [Reference-Reaper:1] 2017-01-09 15:01:12,481 Ref.java:202 - LEAK 
DETECTED: a reference 
(org.apache.cassandra.utils.concurrent.Ref$State@5feebbbd) to class 
org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier@1990550669:/data/manhattan/rcmessages-5f65e360d49411e6ac36cb64da3c5bcf/ma-2-big
 was not released before the reference was garbage collected



Issue 4: Failure on repair (cannot complete repair) - validation failures.
INFO  [Thread-9] 2017-01-09 15:01:12,496 RepairSession.java:237 - [repair 
#75f99b00-d67c-11e6-a76f-f1d6fd321f0d] new session: will sync 
ahldataslave1.bos.manhattan.aspect-cloud.net/10.184.8.151, /10.184.8.136, 
/10.184.8.219, /10.184.8.206 on range 
[(7070473513877450523,7071785512108503562], 
(7540323476844137856,7551069853951512536], 
(6496851087781126402,6506947825241172690], 
(4956723654110177663,4997988272614120716], 
(6159728418399742238,6161785046042182181], 
(-6111201816165886930,-6109358652076682027], 
(6765434292326999735,6786216263996459971], 
(5670991529662923445,5678922736379606122], 
(-8368452819419163190,-8352559832808839636], 
(-3579114434972148656,-3552744642655983590], 
(7574005965138357735,7575976736757457093], 
(3443342880213529041,3448513378658973391], 
(-6374441519731158925,-6368083975098827965], 
(1506273267531550913,1508155162580364084], 
(-3841814855559153943,-3835938678769454001], 
(9170965416227969215,9181174655986386320], 
(-6589650497263617394,-6578994961053045565], 
(-7526495575912144496,-7518448902193774650], 
(3448513378658973391,3466857105667177973], 
(7553098986919382391,7574005965138357735], 
(-7927877550785715833,-7927648953253692861], 
(8525761079018902513,8533541215797136240], 
(-9020129600263662082,-9010501329825003246], 
(1090724998362773160,1097939939665235297], 
(6495099300248039972,6496851087781126402], 
(6161785046042182181,6230901034893815059], 
(-7463338857564269606,-7459175745770455573], 
(-5365113529531278290,-5358403398116793300], 
(2249898065901245108,2256752991177466019], 
(427458615961451939,456792456721828910], 
(-7518448902193774650,-7476577165771266744], 
(8496964666711176665,8503454084084785332], 
(1508155162580364084,1531943799366406071], 
(1623939448991457330,1628591069075100791], 
(2500969373198505595,2510256322219581447], 
(1487072216030226303,1506273267531550913], 
(-8842784826526224555,-8840216173643212475], 
(2233348668129647030,2247658708769712814], 
(-8289206614243730701,-8287074180401539509], 
(-7476577165771266744,-7470389682785988771], 
(3509709684061378867,3512938839959595162], 
(1296769759309759534,1302830049359124705], 
(7575976736757457093,7612135532866611803], 
(7539950122318008545,7540323476844137856], 
(-1860975172751451123,-1853676643512030698], 
(-8116786947316919605,-8107369675963369796], 
(-5576866678991811211,-5548824138592035245], 
(-9211881728677655622,-9209566963086044390], 
(7489367377277174970,7511259639253940249], 
(1302830049359124705,1310010318365119318], 
(-8750733220711433842,-8741408722769214425], 
(-6060376367842620341,-6049131555099770258], 
(2476529278549364684,2476659930520260878], 
(-4418742343319617797,-4384333951548488071], 
(1930660747072472501,1946687557062422024], 
(-3702380150896445622,-3691910222307497728], 
(-4419703203609450987,-4418742343319617797], 
(7551697213870628887,7553098986919382391], 
(-7909869864636951454,-7904683595914140744], 
(2492882420790179151,2500969373198505595], 
(759685512451005610,773693246847159219], 
(722689136592207691,730821328907957274], 
(5219025897237634110,5229566135848567231], 
(4149517035748854868,4162833917677490963], 
(1326132699179277905,1349642653396670633], 
(-3552744642655983590,-3549073980410969181], 
(-4456698363145934960,-4419703203609450987], 
(-5482989026069906323,-5481213659503324794], 
(279535406932511121,297415597645494493], 
(-9204266745720873498,-9161795161892156657], 
(6786216263996459971,6786883290959946615], 
(1635462812102810232,1638975594001298412], 
(1531943799366406071,1546279755200334429], 
(-3851094911406737954,-3841814855559153943], 
(8488130353439482734,8496964666711176665], 
(9146936609495586767,9148689706364420814], 
(-3674452659583777301,-3669778494255064100], 
(1546279755200334429,1554992050513055527], 
(2969501640373218313,2975603144417796179], 
(-3865994019611705472,-3851094911406737954], 
(1119818899797211952,1121114266048498658], 
(5555981883036126656,5559877922798642583], 
(-9161795161892156657,-9148239227447645822], 
(-1988480938545038453,-1972594091279542463], 
(-8457443005098123276,-8426466451426413266], 
(7527886006442742638,7539950122318008545], 
(1482724986864293552,1487072216030226303], 
(218814708185728764,222373457441562248], 
(-1844742172330357357,-1834186452017037646], 
(-7914786200548736052,-7909869864636951454], 
(1554992050513055527,1556471756149638584], 
(2247658708769712814,2249241162600622119], 
(2249241162600622119,2249898065901245108], 
(-6368083975098827965,-6357129727004451888], 
(1349642653396670633,1372390693080139703], 
(-5628093303198956105,-5602276528881256607], 
(-5602276528881256607,-5576866678991811211], 
(-1972594091279542463,-1932380490869749103], 
(6746187069375198686,6759453964579921534], 
(-9209566963086044390,-9204266745720873498], 
(2969169700471726709,2969501640373218313], 
(-1846725725884736711,-1844742172330357357], 
(8466845312658849111,8478632986527402947], 
(6786883290959946615,6786909234664957611], 
(-8105207391882034800,-8058995460560987960], 
(-5481213659503324794,-5480151738028046165], 
(6152943806705127166,6159728418399742238], 
(-7931416471770778308,-7927877550785715833], 
(-7444305315017293180,-7438698090368547807], 
(-5405765462772655927,-5365113529531278290], 
(7468218535666030613,7489367377277174970], 
(7370990959551251700,7384554095789173771], 
(9181174655986386320,9197356813903415489], 
(-7891619558235712999,-7886926665775314135], 
(4863660993721847898,4876110806493712229], 
(5546813895398001993,5555981883036126656], 
(6793672076817085638,6817463007248949484], 
(730821328907957274,741073317079317196], 
(1285297621466628116,1296769759309759534], 
(-6109358652076682027,-6097749005908966679], 
(-3160359268440132710,-3150255443388600113], 
(-6067028212437311851,-6060376367842620341], 
(3512938839959595162,3531669213417260709], 
(-1641724835017736571,-1630212592242213627], 
(-5631109618795517413,-5628093303198956105], 
(6759453964579921534,6765434292326999735], 
(8027648385044762960,8030142266857918084], 
(1264145341476479882,1285297621466628116], 
(1116504555019555851,1119818899797211952], 
(-3139664283152392978,-3138393885745606369], 
(-1652241560457928053,-1641724835017736571], 
(8503454084084785332,8525761079018902513], 
(-1853676643512030698,-1846725725884736711], 
(1628591069075100791,1635462812102810232], 
(-8840216173643212475,-8817712049837887184], 
(-6357129727004451888,-6355060010614218705], 
(-6097749005908966679,-6088616433680186631], 
(-7904683595914140744,-7891619558235712999], 
(-4952793941753266051,-4937049631932742604], 
(-3150255443388600113,-3139664283152392978], 
(2512801900471921714,2516325796899709313], 
(2510256322219581447,2512801900471921714], 
(-5638226176228799616,-5631109618795517413], 
(-7886926665775314135,-7882937045572193145], 
(6786909234664957611,6793672076817085638], 
(-3691910222307497728,-3674452659583777301], 
(-4867940821711541762,-4866946150328928181], 
(7071785512108503562,7081793743588959944], 
(4876110806493712229,4879643371134562502], 
(6138845154266790671,6152943806705127166], 
(-6355060010614218705,-6332373169802347251], 
(-6125214696594291714,-6111201816165886930], 
(-7470389682785988771,-7463338857564269606], 
(-3598204681868075295,-3579114434972148656], 
(-8107369675963369796,-8105207391882034800], 
(7612135532866611803,7641727005250566009], 
(9148689706364420814,9170965416227969215], 
(6506947825241172690,6515762919020447377], 
(-6088616433680186631,-6067028212437311851], 
(741073317079317196,759685512451005610], 
(-8352559832808839636,-8344010281020219217], 
(-6049131555099770258,-6043632332003790850], 
(3494099643169044463,3509709684061378867], 
(3466857105667177973,3494099643169044463], 
(7551069853951512536,7551697213870628887], 
(2476659930520260878,2492882420790179151], 
(-8842911646480810622,-8842784826526224555], 
(193808271419729511,198960416318160202], 
(-4873803694032119901,-4867940821711541762], 
(-7569775426219162591,-7569610743922997927], 
(4730391117872973381,4732570096640666262], 
(9137762516596245936,9146936609495586767], 
(-9148239227447645822,-9137147760354721369], 
(-8296203956052422690,-8289206614243730701], 
(198960416318160202,218814708185728764]] for manhattan.[config, messages, 
rcmessages, csseedmessages, metadata, rqmessages]
WARN  [SharedPool-Worker-2] 2017-01-09 15:01:38,219 
AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
Thread[SharedPool-Worker-2,5,main]: {}
java.lang.RuntimeException: java.lang.NullPointerException
at 
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2461)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_111]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
 [apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) 
[apache-cassandra-3.3.0.jar:3.3.0]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]
Caused by: java.lang.NullPointerException: null
WARN  [SharedPool-Worker-2] 2017-01-09 15:04:41,678 
AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
Thread[SharedPool-Worker-2,5,main]: {}
java.lang.RuntimeException: java.lang.NullPointerException
at 
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2461)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_111]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 ~[apache-cassandra-3.3.0.jar:3.3.0]
at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
 [apache-cassandra-3.3.0.jar:3.3.0]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) 
[apache-cassandra-3.3.0.jar:3.3.0]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]


Regards,
DHRUVA GOPAL
sr. MANAGER, ENGINEERING
REPORTING, ANALYTICS AND BIG DATA
+1 408.325.2011 WORK
+1 408.219.1094 MOBILE
UNITED STATES
dhruva.go...@aspect.com<mailto:dhruva.go...@aspect.com>
aspect.com<http://www.aspect.com/>
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