[jira] [Commented] (CASSANDRA-10988) ClassCastException in SelectStatement

["Vadim TSes'ko (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-10988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15230612#comment-15230612 ] 

Vadim TSes'ko commented on CASSANDRA-10988:
-------------------------------------------

We managed to reproduce the bug using Cassandra 2.2.5 with the following table schema (unset parameters use default values):
{code:sql}
CREATE TABLE mytable (
    u text,
    t timeuuid,
    PRIMARY KEY (u, t)
) WITH COMPACT STORAGE
    AND CLUSTERING ORDER BY (t DESC)
    AND compaction = {'min_threshold': '2', 'class': 'org.apache.cassandra.db.compaction.DateTieredCompactionStrategy', 'base_time_seconds': '1'}
    AND compression = {'sstable_compression': 'org.apache.cassandra.io.compress.LZ4Compressor'}
    AND dclocal_read_repair_chance = 0.0
    AND default_time_to_live = 10
    AND gc_grace_seconds = 0
    AND read_repair_chance = 0.0;
{code}
And the following query:
{code:sql}
SELECT COUNT(1) as cnt
FROM mytable
WHERE u = :user AND t > :timestamp
ORDER BY t DESC
LIMIT 110;
{code}
Removing {{COMPACT STORAGE}} definitely helps, so it is somehow connected.

> ClassCastException in SelectStatement
> -------------------------------------
>
>                 Key: CASSANDRA-10988
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10988
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>            Reporter: Vassil Hristov
>
> After we've upgraded our cluster to version 2.1.11, we started getting the bellow exceptions for some of our queries. Issue seems to be very similar to CASSANDRA-7284.
> {code:java}
> java.lang.ClassCastException: org.apache.cassandra.db.composites.Composites$EmptyComposite cannot be cast to org.apache.cassandra.db.composites.CellName
>         at org.apache.cassandra.db.composites.AbstractCellNameType.cellFromByteBuffer(AbstractCellNameType.java:188) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.db.composites.AbstractSimpleCellNameType.makeCellName(AbstractSimpleCellNameType.java:125) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.db.composites.AbstractCellNameType.makeCellName(AbstractCellNameType.java:254) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.statements.SelectStatement.makeExclusiveSliceBound(SelectStatement.java:1197) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.statements.SelectStatement.applySliceRestriction(SelectStatement.java:1205) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.statements.SelectStatement.processColumnFamily(SelectStatement.java:1283) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.statements.SelectStatement.process(SelectStatement.java:1250) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.statements.SelectStatement.processResults(SelectStatement.java:299) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:276) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:224) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:67) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:238) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.cql3.QueryProcessor.processPrepared(QueryProcessor.java:493) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.transport.messages.ExecuteMessage.execute(ExecuteMessage.java:138) ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:439) [apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:335) [apache-cassandra-2.1.11.jar:2.1.11]
>         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(Executors.java:511) [na:1.8.0_66]
>         at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164) [apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) [apache-cassandra-2.1.11.jar:2.1.11]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_66]
> {code}



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