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From "Jan Karlsson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8643) merkle tree creation fails with NoSuchElementException
Date Tue, 09 Feb 2016 08:35:18 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15138538#comment-15138538
] 

Jan Karlsson commented on CASSANDRA-8643:
-----------------------------------------

This problem was on 2.1.12 and we were running full repair with -pr.

> merkle tree creation fails with NoSuchElementException
> ------------------------------------------------------
>
>                 Key: CASSANDRA-8643
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8643
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: We are running on a three node cluster with three in replication(C*
2.1.1). It uses a default C* installation and STCS.
>            Reporter: Jan Karlsson
>             Fix For: 2.1.3
>
>
> We have a problem that we encountered during testing over the weekend. 
> During the tests we noticed that repairs started to fail. This error has occured on multiple
non-coordinator nodes during repair. It also ran at least once without producing this error.
> We run repair -pr on all nodes on different days. CPU values were around 40% and disk
was 50% full.
> From what I understand, the coordinator asked for merkle trees from the other two nodes.
However one of the nodes fails to create his merkle tree.
> Unfortunately we do not have a way to reproduce this problem.
> The coordinator receives:
> {noformat}
> 2015-01-09T17:55:57.091+0100  INFO [RepairJobTask:4] RepairJob.java:145 [repair #59455950-9820-11e4-b5c1-7797064e1316]
requesting merkle trees for censored (to [/xx.90, /xx.98, /xx.82])
> 2015-01-09T17:55:58.516+0100  INFO [AntiEntropyStage:1] RepairSession.java:171 [repair
#59455950-9820-11e4-b5c1-7797064e1316] Received merkle tree for censored from /xx.90
> 2015-01-09T17:55:59.581+0100 ERROR [AntiEntropySessions:76] RepairSession.java:303 [repair
#59455950-9820-11e4-b5c1-7797064e1316] session completed with the following error
> org.apache.cassandra.exceptions.RepairException: [repair #59455950-9820-11e4-b5c1-7797064e1316
on censored/censored, (-6476420463551243930,-6471459119674373580]] Validation failed in /xx.98
>         at org.apache.cassandra.repair.RepairSession.validationComplete(RepairSession.java:166)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.service.ActiveRepairService.handleMessage(ActiveRepairService.java:384)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.repair.RepairMessageVerbHandler.doVerb(RepairMessageVerbHandler.java:126)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:62)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
[na:1.7.0_51]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[na:1.7.0_51]
>         at java.lang.Thread.run(Thread.java:744) [na:1.7.0_51]
> 2015-01-09T17:55:59.582+0100 ERROR [AntiEntropySessions:76] CassandraDaemon.java:153
Exception in thread Thread[AntiEntropySessions:76,5,RMI Runtime]
> java.lang.RuntimeException: org.apache.cassandra.exceptions.RepairException: [repair
#59455950-9820-11e4-b5c1-7797064e1316 on censored/censored, (-6476420463551243930,-6471459119674373580]]
Validation failed in /xx.98
>         at com.google.common.base.Throwables.propagate(Throwables.java:160) ~[guava-16.0.jar:na]
>         at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:32) ~[apache-cassandra-2.1.1.jar:2.1.1]
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) ~[na:1.7.0_51]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262) ~[na:1.7.0_51]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
~[na:1.7.0_51]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[na:1.7.0_51]
>        at java.lang.Thread.run(Thread.java:744) [na:1.7.0_51] Caused by: org.apache.cassandra.exceptions.RepairException:
[repair #59455950-9820-11e4-b5c1-7797064e1316 on censored/censored, (-6476420463551243930,-6471459119674373580]]
Validation failed in /xx.98
>         at org.apache.cassandra.repair.RepairSession.validationComplete(RepairSession.java:166)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.service.ActiveRepairService.handleMessage(ActiveRepairService.java:384)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.repair.RepairMessageVerbHandler.doVerb(RepairMessageVerbHandler.java:126)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:62)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         ... 3 common frames omitted
> {noformat}
> While one of the other nodes produces this error:
> {noformat}
> 2015-01-09T17:55:59.574+0100 ERROR [ValidationExecutor:16] Validator.java:232 Failed
creating a merkle tree for [repair #59455950-9820-11e4-b5c1-7797064e1316 on censored/censored,
(-6476420463551243930,-6471459119674373580]], /xx.82 (see log for details)
> 2015-01-09T17:55:59.578+0100 ERROR [ValidationExecutor:16] CassandraDaemon.java:153 Exception
in thread Thread[ValidationExecutor:16,1,main]
> java.util.NoSuchElementException: null
>         at com.google.common.collect.AbstractIterator.next(AbstractIterator.java:154)
~[guava-16.0.jar:na]
>         at org.apache.cassandra.repair.Validator.add(Validator.java:137) ~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.db.compaction.CompactionManager.doValidationCompaction(CompactionManager.java:930)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.db.compaction.CompactionManager.access$600(CompactionManager.java:97)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:557)
~[apache-cassandra-2.1.1.jar:2.1.1]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262) ~[na:1.7.0_51]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
~[na:1.7.0_51]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[na:1.7.0_51]
>         at java.lang.Thread.run(Thread.java:744) [na:1.7.0_51]
> {noformat}



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