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https://issues.apache.org/jira/browse/CASSANDRA-9659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14624741#comment-14624741
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Benjamin Lerer commented on CASSANDRA-9659:
-------------------------------------------
{quote}I have been reading how to enable tracing at the Cassandra level by
executing the "TRACING ON" command but have not been successful through
DevCenter. Is there a better way to get the actual offending queries from
Cassandra logs?{quote}
I do not think so.
The query that triggered this assertion managed to get some results but failed
while retrieving part of them.
The value of the last partition key returned was
4b62deb2-bb43-4fad-a2c1-5c4a23c07592 and the one of the last key requested was
db4e85ff-e258-4105-aa1a-4b09f559efcd.
Based on those values and on the queries that you provided me it seems that the
query was performed on the rawmessage table.
> ServerErrorException: java.lang.AssertionError
> ----------------------------------------------
>
> Key: CASSANDRA-9659
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9659
> Project: Cassandra
> Issue Type: Bug
> Environment: CentOS 6.5
> Cassandra 2.1.3
> Reporter: Dave Decicco
> Assignee: Benjamin Lerer
> Fix For: 2.1.x
>
> Attachments: rawmessage column family.PNG, trackingdevice column
> family.PNG
>
>
> An issue exists where a java.lang.AssertionError occurs for a select number
> of read queries from Cassandra within our application.
> It was suggested that a ticket be created to see if the error below is the
> same as CASSANDRA-8949 which was fixed in version 2.1.5.
> Here is a portion of the Cassandra log file where the exception occurs:
> {code}
> INFO [MemtableFlushWriter:50153] 2015-06-23 13:11:17,517 Memtable.java:385 -
> Completed flushing; nothing needed to be retained. Commitlog position was
> ReplayPosition(segmentId=1425054853780, position=8886361)
> ERROR [SharedPool-Worker-1] 2015-06-23 13:11:29,047 Message.java:538 -
> Unexpected exception during request; channel = [id: 0x8f1ca59e,
> /10.30.43.68:33717 => /10.30.43.146:9042]javaa.lang.AssertionError:
> [DecoratedKey(5747358200379796162,
> 64623465383566662d653235382d343130352d616131612d346230396635353965666364),DecoratedKey(3303996443194009861,
> 34623632646562322d626234332d346661642d613263312d356334613233633037353932)]
> at org.apache.cassandra.dht.Bounds.<init>(Bounds.java:41)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at org.apache.cassandra.dht.Bounds.<init>(Bounds.java:34)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.service.pager.RangeSliceQueryPager.makeIncludingKeyBounds(RangeSliceQueryPager.java:123)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.service.pager.RangeSliceQueryPager.queryNextPage(RangeSliceQueryPager.java:74)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.service.pager.AbstractQueryPager.fetchPage(AbstractQueryPager.java:87)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.service.pager.RangeSliceQueryPager.fetchPage(RangeSliceQueryPager.java:37)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:219)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:62)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:238)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.cql3.QueryProcessor.processPrepared(QueryProcessor.java:493)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.transport.messages.ExecuteMessage.execute(ExecuteMessage.java:134)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:439)
> [apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:335)
> [apache-cassandra-2.1.3.jar:2.1.3]
> at
> io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
> [netty-all-4.0.23.Final.jar:4.0.23.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333)
> [netty-all-4.0.23.Final.jar:4.0.23.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.access$700(AbstractChannelHandlerContext.java:32)
> [netty-all-4.0.23.Final.jar:4.0.23.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext$8.run(AbstractChannelHandlerContext.java:324)
> [netty-all-4.0.23.Final.jar:4.0.23.Final]
> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
> Source) [na:1.7.0_76]
> at
> org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164)
> [apache-cassandra-2.1.3.jar:2.1.3]
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
> [apache-cassandra-2.1.3.jar:2.1.3]
> at java.lang.Thread.run(Unknown Source) [na:1.7.0_76]
> INFO [BatchlogTasks:1] 2015-06-23 13:12:17,521 ColumnFamilyStore.java:877 -
> Enqueuing flush of batchlog: 27641 (0%) on-heap, 0 (0%) off-heap
> INFO [MemtableFlushWriter:50154] 2015-06-23 13:12:17,522 Memtable.java:339 -
> Writing Memtable-batchlog@297832842(22529 serialized bytes, 40 ops, 0%/0% of
> on/off-heap limit)
> INFO [MemtableFlushWriter:50154] 2015-06-23 13:12:17,523 Memtable.java:385 -
> Completed flushing; nothing needed to be retained. Commitlog position was
> ReplayPosition(segmentId=1425054853780, position=8948299)
> {code}
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