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From "sankalp kohli (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-10499) ConcurrentModificationException in Background read repair
Date Fri, 09 Oct 2015 18:02:06 GMT
sankalp kohli created CASSANDRA-10499:
-----------------------------------------

             Summary:  ConcurrentModificationException in Background read repair
                 Key: CASSANDRA-10499
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10499
             Project: Cassandra
          Issue Type: Bug
            Reporter: sankalp kohli
            Priority: Minor


We are seeing the below exception in 2.0.14. While looking at the code, it looks like it is
happening due to ColumnFamily object being modified in SQF. trim method.


Exception in thread Thread[ReadRepairStage:4441,5,main]
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:859)
	at java.util.ArrayList$Itr.next(ArrayList.java:831)
	at org.apache.cassandra.db.ColumnFamily.updateDigest(ColumnFamily.java:394)
	at org.apache.cassandra.db.ColumnFamily.digest(ColumnFamily.java:388)
	at org.apache.cassandra.service.RowDigestResolver.resolve(RowDigestResolver.java:84)
	at org.apache.cassandra.service.RowDigestResolver.resolve(RowDigestResolver.java:28)
	at org.apache.cassandra.service.ReadCallback$AsyncRepairRunner.run(ReadCallback.java:173)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)



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