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From "Viktor Jevdokimov (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-3870) Internal error processing batch_mutate: java.util.ConcurrentModificationException on CounterColumn
Date Tue, 07 Feb 2012 10:30:59 GMT
Internal error processing batch_mutate: java.util.ConcurrentModificationException on CounterColumn
--------------------------------------------------------------------------------------------------

                 Key: CASSANDRA-3870
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3870
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 1.0.7
         Environment: Debian 6.0 x64
x64 Sun Java 6u26
Cassandra 1.0.7
JNA
2 DCs, 1 ring/DC, 8 nodes/ring, RF=3/DC, Random partitioner.
Disk access auto (mmap)
            Reporter: Viktor Jevdokimov


Cassandra throws an exception below while performing batch_mutate with counter column insertion
mutation to increment column with 1:

ERROR [Thrift:134] 2012-02-03 15:51:02,800 Cassandra.java (line 3462) Internal error processing
batch_mutate
java.util.ConcurrentModificationException
        at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
        at java.util.AbstractList$Itr.next(AbstractList.java:343)
        at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:532)
        at org.apache.cassandra.service.AbstractWriteResponseHandler.waitForHints(AbstractWriteResponseHandler.java:89)
        at org.apache.cassandra.service.AbstractWriteResponseHandler.get(AbstractWriteResponseHandler.java:58)
        at org.apache.cassandra.service.StorageProxy.mutate(StorageProxy.java:201)
        at org.apache.cassandra.thrift.CassandraServer.doInsert(CassandraServer.java:639)
        at org.apache.cassandra.thrift.CassandraServer.internal_batch_mutate(CassandraServer.java:590)
        at org.apache.cassandra.thrift.CassandraServer.batch_mutate(CassandraServer.java:598)
        at org.apache.cassandra.thrift.Cassandra$Processor$batch_mutate.process(Cassandra.java:3454)
        at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
        at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)

Column family definition:

create column family CountersColumnFamily1
  with column_type = 'Standard'
  and comparator = 'BytesType'
  and default_validation_class = 'BytesType'
  and key_validation_class = 'BytesType'
  and rows_cached = 1000000.0
  and row_cache_save_period = 0
  and row_cache_keys_to_save = 2147483647
  and keys_cached = 0.0
  and key_cache_save_period = 14400
  and read_repair_chance = 0.1
  and gc_grace = 43200
  and min_compaction_threshold = 4
  and max_compaction_threshold = 32
  and replicate_on_write = true
  and row_cache_provider = 'SerializingCacheProvider'
  and compaction_strategy = 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy';

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