bert Passek created CASSANDRA-4231:
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Summary: ConcurrentModificationException while writing mutations
with ColumnFamilyRecordWrite
Key: CASSANDRA-4231
URL: https://issues.apache.org/jira/browse/CASSANDRA-4231
Project: Cassandra
Issue Type: Bug
Components: Hadoop
Affects Versions: 1.0.10
Environment: Debian Squeeze, one local cassandra node
Reporter: bert Passek
Hello,
we are using mapreduce jobs for writing data into cassandra. Sometimes the job
fails because of a concurrent modification exception.
java.io.IOException: java.util.ConcurrentModificationException
at
org.apache.cassandra.hadoop.ColumnFamilyRecordWriter$RangeClient.run(ColumnFamilyRecordWriter.java:307)
Caused by: java.util.ConcurrentModificationException
at
java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
at java.util.AbstractList$Itr.next(AbstractList.java:343)
at org.apache.cassandra.thrift.SuperColumn.write(SuperColumn.java:440)
at
org.apache.cassandra.thrift.ColumnOrSuperColumn.write(ColumnOrSuperColumn.java:561)
at org.apache.cassandra.thrift.Mutation.write(Mutation.java:384)
at
org.apache.cassandra.thrift.Cassandra$batch_mutate_args.write(Cassandra.java:19021)
at
org.apache.cassandra.thrift.Cassandra$Client.send_batch_mutate(Cassandra.java:1018)
at
org.apache.cassandra.thrift.Cassandra$Client.batch_mutate(Cassandra.java:1008)
at
org.apache.cassandra.hadoop.ColumnFamilyRecordWriter$RangeClient.run(ColumnFamilyRecordWriter.java:299)
We were using Cassandra 1.0.8 for quite a long time without such problems.
Regards Bert Passek
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