Hi All,
First, let me apologize for the long message. Repair service is driving me insane. :) We are running Cassandra version *2.1.11.908* in 3 data centers. While running nodetool repair we are receiving the following error: [2015-11-20 00:25:24,803] Repair session 2ed2f930-8f1d-11e5-a498-4b9679ec178d for range (4375311677306593380,4384065392379704564] failed with error org.apache.cassandra.exceptions.RepairException: [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d on keyspace/table, (4375311677306593380,4384065392379704564]] Sync failed between /10.10.8.104 and /10.30.30.6 Unfortunately, not much information online. Any ideas how to fix this issue or determine root cause? Thanks! Detailed log below: ERROR [AntiEntropySessions:8] 2015-11-20 00:25:24,801 RepairSession.java:303 - [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d] session completed with the following error org.apache.cassandra.exceptions.RepairException: [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d on keyspace/table, (4375311677306593380,4384065392379704564]] Sync failed between /10.10.8.104 and /10.30.30.6 at org.apache.cassandra.repair.RepairSession.syncComplete(RepairSession.java:223) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.service.ActiveRepairService.handleMessage(ActiveRepairService.java:411) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.repair.RepairMessageVerbHandler.doVerb(RepairMessageVerbHandler.java:134) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_60] at java.lang.Thread.run(Unknown Source) [na:1.8.0_60] ERROR [AntiEntropySessions:8] 2015-11-20 00:25:24,802 CassandraDaemon.java:227 - Exception in thread Thread[AntiEntropySessions:8,5,RMI Runtime] java.lang.RuntimeException: org.apache.cassandra.exceptions.RepairException: [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d on keyspace/table, (4375311677306593380,4384065392379704564]] Sync failed between /10.10.8.104 and /10.30.30.6 at com.google.common.base.Throwables.propagate(Throwables.java:160) ~[guava-16.0.1.jar:na] at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:32) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[na:1.8.0_60] at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_60] at java.lang.Thread.run(Unknown Source) [na:1.8.0_60] Caused by: org.apache.cassandra.exceptions.RepairException: [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d on keyspace/table, (4375311677306593380,4384065392379704564]] Sync failed between /10.10.8.104 and /10.30.30.6 at org.apache.cassandra.repair.RepairSession.syncComplete(RepairSession.java:223) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.service.ActiveRepairService.handleMessage(ActiveRepairService.java:411) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.repair.RepairMessageVerbHandler.doVerb(RepairMessageVerbHandler.java:134) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] ... 3 common frames omitted ERROR [Thread-3128] 2015-11-20 00:25:24,802 StorageService.java:3008 - Repair session 2ed2f930-8f1d-11e5-a498-4b9679ec178d for range (4375311677306593380,4384065392379704564] failed with error org.apache.cassandra.exceptions.RepairException: [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d on keyspace/table, (4375311677306593380,4384065392379704564]] Sync failed between /10.10.8.104 and /10.30.30.6 java.util.concurrent.ExecutionException: java.lang.RuntimeException: org.apache.cassandra.exceptions.RepairException: [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d on keyspace/table, (4375311677306593380,4384065392379704564]] Sync failed between /10.10.8.104 and /10.30.30.6 at java.util.concurrent.FutureTask.report(Unknown Source) [na:1.8.0_60] at java.util.concurrent.FutureTask.get(Unknown Source) [na:1.8.0_60] at org.apache.cassandra.service.StorageService$4.runMayThrow(StorageService.java:2999) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) [cassandra-all-2.1.11.908.jar:2.1.11.908] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [na:1.8.0_60] at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_60] at java.lang.Thread.run(Unknown Source) [na:1.8.0_60] Caused by: java.lang.RuntimeException: org.apache.cassandra.exceptions.RepairException: [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d on keyspace/table, (4375311677306593380,4384065392379704564]] Sync failed between /10.10.8.104 and /10.30.30.6 at com.google.common.base.Throwables.propagate(Throwables.java:160) ~[guava-16.0.1.jar:na] at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:32) [cassandra-all-2.1.11.908.jar:2.1.11.908] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [na:1.8.0_60] at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[na:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[na:1.8.0_60] ... 1 common frames omitted Caused by: org.apache.cassandra.exceptions.RepairException: [repair #2ed2f930-8f1d-11e5-a498-4b9679ec178d on keyspace/table, (4375311677306593380,4384065392379704564]] Sync failed between /10.10.8.104 and /10.30.30.6 at org.apache.cassandra.repair.RepairSession.syncComplete(RepairSession.java:223) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.service.ActiveRepairService.handleMessage(ActiveRepairService.java:411) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.repair.RepairMessageVerbHandler.doVerb(RepairMessageVerbHandler.java:134) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64) ~[cassandra-all-2.1.11.908.jar:2.1.11.908] ... 3 common frames omitted Thanks, Rafael