bert Passek created CASSANDRA-4231: -------------------------------------- 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 -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira