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Donald Smith commented on CASSANDRA-6152: ----------------------------------------- The test just runs our test suite repeatedly. After a few runs it gets the following, with TRACE level. I'll document more later. {noformat} DEBUG [Native-Transport-Requests:11] 2013-10-09 11:40:49,459 Message.java (line 302) Received: PREPARE INSERT INTO as_reports.data_report_details(report_id,item_name,item_value) VALUES (7bc2a570-a42b-4632-b245-f0db9255ccc3,?,?);, v=1 TRACE [Native-Transport-Requests:11] 2013-10-09 11:40:49,460 QueryProcessor.java (line 208) Stored prepared statement ef4c655e042ffab2c1f0eef1e53a573e with 2 bind markers DEBUG [Native-Transport-Requests:11] 2013-10-09 11:40:49,460 Tracing.java (line 157) request complete DEBUG [Native-Transport-Requests:11] 2013-10-09 11:40:49,460 Message.java (line 309) Responding: RESULT PREPARED ef4c655e042ffab2c1f0eef1e53a573e [item_name(as_reports, data_report_details), org.apache.cassandra.db.marshal.UTF8Type][item_value(as_reports, data_report_details), org.apache.cassandra.db.marshal.UTF8Type] (resultMetadata=[0 columns]), v=1 DEBUG [Native-Transport-Requests:13] 2013-10-09 11:40:49,464 Message.java (line 302) Received: EXECUTE ef4c655e042ffab2c1f0eef1e53a573e with 2 values at consistency ONE, v=1 TRACE [Native-Transport-Requests:13] 2013-10-09 11:40:49,464 QueryProcessor.java (line 232) [1] 'java.nio.HeapByteBuffer[pos=0 lim=0 cap=0]' TRACE [Native-Transport-Requests:13] 2013-10-09 11:40:49,464 QueryProcessor.java (line 232) [2] 'java.nio.HeapByteBuffer[pos=36 lim=41 cap=43]' TRACE [Native-Transport-Requests:13] 2013-10-09 11:40:49,464 QueryProcessor.java (line 97) Process org.apache.cassandra.cql3.statements.UpdateStatement@321baa4a @CL.ONE ERROR [COMMIT-LOG-WRITER] 2013-10-09 11:40:49,465 CassandraDaemon.java (line 185) Exception in thread Thread[COMMIT-LOG-WRITER,5,main] java.lang.AssertionError at org.apache.cassandra.db.ColumnSerializer.serialize(ColumnSerializer.java:56) at org.apache.cassandra.db.ColumnFamilySerializer.serialize(ColumnFamilySerializer.java:77) at org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:268) at org.apache.cassandra.db.commitlog.CommitLogSegment.write(CommitLogSegment.java:229) at org.apache.cassandra.db.commitlog.CommitLog$LogRecordAdder.run(CommitLog.java:352) at org.apache.cassandra.db.commitlog.PeriodicCommitLogExecutorService$1.runMayThrow(PeriodicCommitLogExecutorService.java:48) at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) at java.lang.Thread.run(Thread.java:722) DEBUG [Native-Transport-Requests:13] 2013-10-09 11:40:49,466 Tracing.java (line 157) request complete DEBUG [Native-Transport-Requests:13] 2013-10-09 11:40:49,466 Message.java (line 309) Responding: EMPTY RESULT, v=1 {noformat} > Assertion error in 2.0.1 at > db.ColumnSerializer.serialize(ColumnSerializer.java:56) > ----------------------------------------------------------------------------------- > > Key: CASSANDRA-6152 > URL: https://issues.apache.org/jira/browse/CASSANDRA-6152 > Project: Cassandra > Issue Type: Bug > Components: Core > Environment: CentOS release 6.2 (Final) > With default set up on single node. > I also saw this exception in 2.0.0 on a three node cluster. > Reporter: Donald Smith > > {noformat} > ERROR [COMMIT-LOG-WRITER] 2013-10-06 12:12:36,845 CassandraDaemon.java (line > 185) Exception in thread Thread[COMMIT-LOG-WRITER,5,main] > java.lang.AssertionError > at > org.apache.cassandra.db.ColumnSerializer.serialize(ColumnSerializer.java:56) > at > org.apache.cassandra.db.ColumnFamilySerializer.serialize(ColumnFamilySerializer.java:77) > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:268) > at > org.apache.cassandra.db.commitlog.CommitLogSegment.write(CommitLogSegment.java:229) > at > org.apache.cassandra.db.commitlog.CommitLog$LogRecordAdder.run(CommitLog.java:352) > at > org.apache.cassandra.db.commitlog.PeriodicCommitLogExecutorService$1.runMayThrow(PeriodicCommitLogExecutorService.java:48) > at > org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) > at java.lang.Thread.run(Thread.java:722) > {noformat} -- This message was sent by Atlassian JIRA (v6.1#6144)