Some generic errors: *[aladdin@ip-172-16-1-10 cassandra]$ tail cassandra.log | grep -i error* *[aladdin@ip-172-16-1-10 cassandra]$ tail cassandra.log | grep -i excep* *[aladdin@ip-172-16-1-10 cassandra]$ tail cassandra.log | grep -i fail* *[aladdin@ip-172-16-1-10 cassandra]$ tail debug.log | grep -i error* *[aladdin@ip-172-16-1-10 cassandra]$ tail debug.log | grep -i exce* *[aladdin@ip-172-16-1-10 cassandra]$ tail debug.log | grep -i fail* *DEBUG [GossipStage:1] 2017-09-01 15:33:27,046 FailureDetector.java:457 - Ignoring interval time of 2108299431 <(210)%20829-9431> for /172.16.1.112 <http://172.16.1.112/>* *DEBUG [GossipStage:1] 2017-09-01 15:33:29,051 FailureDetector.java:457 - Ignoring interval time of 2005507384 for /172.16.1.74 <http://172.16.1.74/>* *DEBUG [GossipStage:1] 2017-09-01 15:33:45,968 FailureDetector.java:457 - Ignoring interval time of 2003371497 for /172.16.1.74 <http://172.16.1.74/>* *DEBUG [GossipStage:1] 2017-09-01 15:33:51,133 FailureDetector.java:457 - Ignoring interval time of 2013260173 <(201)%20326-0173> for /172.16.1.74 <http://172.16.1.74/>* *DEBUG [GossipStage:1] 2017-09-01 15:33:58,981 FailureDetector.java:457 - Ignoring interval time of 2009620081 for /172.16.1.112 <http://172.16.1.112/>* *DEBUG [GossipStage:1] 2017-09-01 15:34:19,235 FailureDetector.java:457 - Ignoring interval time of 2010956256 for /172.16.1.74 <http://172.16.1.74/>* *DEBUG [GossipStage:1] 2017-09-01 15:34:19,235 FailureDetector.java:457 - Ignoring interval time of 2011127930 for /10.0.1.122 <http://10.0.1.122/>* *[aladdin@ip-172-16-1-10 cassandra]$ tail system.log | grep -i error* *io.netty.channel.unix.Errors$NativeIoException: syscall:read(...)() failed: Connection reset by peer* *[aladdin@ip-172-16-1-10 cassandra]$ tail system.log | grep -i exce* *INFO [Native-Transport-Requests-5] 2017-09-01 15:22:58,806 Message.java:619 - Unexpected exception during request; channel = [id: 0xdd63db2f, L:/10.0.1.47:9042 <http://10.0.1.47:9042/> ! R:/10.0.44.196:41422 <http://10.0.44.196:41422/>]* *io.netty.channel.unix.Errors$NativeIoException: syscall:read(...)() failed: Connection reset by peer* *[aladdin@ip-172-16-1-10 cassandra]$ tail system.log | grep -i fail* *io.netty.channel.unix.Errors$NativeIoException: syscall:read(...)() failed: Connection reset by peer*
Some interesting errors: 1. *DEBUG [ReadRepairStage:1] 2017-09-01 15:34:58,485 ReadCallback.java:242 - Digest mismatch:* *org.apache.cassandra.service.DigestMismatchException: Mismatch for key DecoratedKey(5988282114260523734, 32623331326162652d633533332d343237632d626334322d306466643762653836343830) (023d99bbcf2263f0fa450c2312fdce88 vs a60ba37a46e0a61227a8b560fa4e0dfb)* * at org.apache.cassandra.service.DigestResolver.compareResponses(DigestResolver.java:92) ~[apache-cassandra-3.11.0.jar:3.11.0]* * at org.apache.cassandra.service.ReadCallback$AsyncRepairRunner.run(ReadCallback.java:233) ~[apache-cassandra-3.11.0.jar:3.11.0]* * at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_112]* * at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_112]* * at org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:81) [apache-cassandra-3.11.0.jar:3.11.0]* * at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_112]* 2. *INFO [Native-Transport-Requests-5] 2017-09-01 15:22:58,806 Message.java:619 - Unexpected exception during request; channel = [id: 0xdd63db2f, L:/10.0.1.47:9042 <http://10.0.1.47:9042/> ! R:/10.0.44.196:41422 <http://10.0.44.196:41422/>]* *io.netty.channel.unix.Errors$NativeIoException: syscall:read(...)() failed: Connection reset by peer* * at io.netty.channel.unix.FileDescriptor.readAddress(...)(Unknown Source) ~[netty-all-4.0.44.Final.jar:4.0.44.Final]* *INFO [Native-Transport-Requests-11] 2017-09-01 15:31:42,722 NoSpamLogger.java:91 - Maximum memory usage reached (512.000MiB), cannot allocate chunk of 1.000MiB* *INFO [CompactionExecutor:470] 2017-09-01 10:16:42,026 NoSpamLogger.java:91 - Maximum memory usage reached (512.000MiB), cannot allocate chunk of 1.000MiB* *INFO [CompactionExecutor:475] 2017-09-01 10:31:42,032 NoSpamLogger.java:91 - Maximum memory usage reached (512.000MiB), cannot allocate chunk of 1.000MiB* *INFO [CompactionExecutor:478] 2017-09-01 10:46:42,108 NoSpamLogger.java:91 - Maximum memory usage reached (512.000MiB), cannot allocate chunk of 1.000MiB* *INFO [CompactionExecutor:482] 2017-09-01 11:01:42,131 NoSpamLogger.java:91 - Maximum memory usage reached (512.000MiB), cannot allocate chunk of 1.000MiB* About this last error, I tried to increase `file_cache_size_in_mb` of this node to 2048, but the error only changed to *INFO [ReadStage-2] 2017-09-01 16:18:38,657 NoSpamLogger.java:91 - Maximum memory usage reached (2.000GiB), cannot allocate chunk of 1.000MiB* 2017-09-01 9:07 GMT-03:00 kurt greaves <k...@instaclustr.com>: > are you seeing any errors in the logs? Is that one compaction still > getting stuck? >
