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Posted to commits@cassandra.apache.org by "Marcus Eriksson (JIRA)" <ji...@apache.org> on 2017/11/29 13:40:00 UTC
[jira] [Commented] (CASSANDRA-13873) Ref bug in Scrub
[ https://issues.apache.org/jira/browse/CASSANDRA-13873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16270733#comment-16270733 ]
Marcus Eriksson commented on CASSANDRA-13873:
---------------------------------------------
ping [~jkni] - should we port the trivial patch to trunk as well and get this in? We could improve it in another ticket I guess
> Ref bug in Scrub
> ----------------
>
> Key: CASSANDRA-13873
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13873
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Reporter: T Jake Luciani
> Assignee: Joel Knighton
> Fix For: 2.2.x, 3.0.x, 3.11.x, 4.x
>
>
> I'm hitting a Ref bug when many scrubs run against a node. This doesn't happen on 3.0.X. I'm not sure if/if not this happens with compactions too but I suspect it does.
> I'm not seeing any Ref leaks or double frees.
> To Reproduce:
> {quote}
> ./tools/bin/cassandra-stress write n=10m -rate threads=100
> ./bin/nodetool scrub
> #Ctrl-C
> ./bin/nodetool scrub
> #Ctrl-C
> ./bin/nodetool scrub
> #Ctrl-C
> ./bin/nodetool scrub
> {quote}
> Eventually in the logs you get:
> WARN [RMI TCP Connection(4)-127.0.0.1] 2017-09-14 15:51:26,722 NoSpamLogger.java:97 - Spinning trying to capture readers [BigTableReader(path='/home/jake/workspace/cassandra2/data/data/keyspace1/standard1-2eb5c780998311e79e09311efffdcd17/mc-5-big-Data.db'), BigTableReader(path='/home/jake/workspace/cassandra2/data/data/keyspace1/standard1-2eb5c780998311e79e09311efffdcd17/mc-32-big-Data.db'), BigTableReader(path='/home/jake/workspace/cassandra2/data/data/keyspace1/standard1-2eb5c780998311e79e09311efffdcd17/mc-31-big-Data.db'), BigTableReader(path='/home/jake/workspace/cassandra2/data/data/keyspace1/standard1-2eb5c780998311e79e09311efffdcd17/mc-29-big-Data.db'), BigTableReader(path='/home/jake/workspace/cassandra2/data/data/keyspace1/standard1-2eb5c780998311e79e09311efffdcd17/mc-27-big-Data.db'), BigTableReader(path='/home/jake/workspace/cassandra2/data/data/keyspace1/standard1-2eb5c780998311e79e09311efffdcd17/mc-26-big-Data.db'), BigTableReader(path='/home/jake/workspace/cassandra2/data/data/keyspace1/standard1-2eb5c780998311e79e09311efffdcd17/mc-20-big-Data.db')],
> *released: [BigTableReader(path='/home/jake/workspace/cassandra2/data/data/keyspace1/standard1-2eb5c780998311e79e09311efffdcd17/mc-5-big-Data.db')],*
> This released table has a selfRef of 0 but is in the Tracker
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