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From "T Jake Luciani (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-13873) Ref bug in Scrub
Date Thu, 14 Sep 2017 20:00:00 GMT
T Jake Luciani created CASSANDRA-13873:
------------------------------------------

             Summary: Ref bug in Scrub
                 Key: CASSANDRA-13873
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13873
             Project: Cassandra
          Issue Type: Bug
            Reporter: T Jake Luciani


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')],
*




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