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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10381) NullPointerException in cqlsh paging through CF with static columns
Date Tue, 20 Oct 2015 09:47:27 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14964886#comment-14964886
] 

Sylvain Lebresne commented on CASSANDRA-10381:
----------------------------------------------

Alright, +1.

> NullPointerException in cqlsh paging through CF with static columns
> -------------------------------------------------------------------
>
>                 Key: CASSANDRA-10381
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10381
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Michael Keeney
>            Assignee: Benjamin Lerer
>              Labels: cqlsh, nullpointerexception, range
>             Fix For: 2.1.x, 2.2.x, 3.0.x
>
>
> When running select count( * ) from cqlsh with limit, the following NPE occurs:
> select count( * ) from tbl1 limit 50000 ; 
> {code}
> ERROR [SharedPool-Worker-4] 2015-09-16 14:49:43,480 QueryMessage.java:132 - Unexpected
error during query
> java.lang.NullPointerException: null
> at org.apache.cassandra.service.pager.RangeSliceQueryPager.containsPreviousLast(RangeSliceQueryPager.java:99)
~[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.service.pager.AbstractQueryPager.fetchPage(AbstractQueryPager.java:119)
~[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.service.pager.RangeSliceQueryPager.fetchPage(RangeSliceQueryPager.java:37)
~[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.cql3.statements.SelectStatement.pageCountQuery(SelectStatement.java:286)
~[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:230)
~[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:67)
~[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:238)
~[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at com.datastax.bdp.cassandra.cql3.DseQueryHandler$StatementExecution.execute(DseQueryHandler.java:291)
~[dse-4.7.2.jar:4.7.2]
> at com.datastax.bdp.cassandra.cql3.DseQueryHandler$Operation.executeWithTiming(DseQueryHandler.java:223)
~[dse-4.7.2.jar:4.7.2]
> at com.datastax.bdp.cassandra.cql3.DseQueryHandler$Operation.executeWithAuditLogging(DseQueryHandler.java:259)
~[dse-4.7.2.jar:4.7.2]
> at com.datastax.bdp.cassandra.cql3.DseQueryHandler.process(DseQueryHandler.java:94) ~[dse-4.7.2.jar:4.7.2]
> at org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:119)
~[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:439) [cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:335) [cassandra-all-2.1.8.621.jar:2.1.8.621]
> 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:471) [na:1.7.0_75]
> at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164)
[cassandra-all-2.1.8.621.jar:2.1.8.621]
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) [cassandra-all-2.1.8.621.jar:2.1.8.621]
> at java.lang.Thread.run(Thread.java:745) [na:1.7.0_75]
> {code}
> Table definition looks something like:
> {code}
> CREATE TABLE tbl1 (
>     field1 bigint,
>     field2 int,
>     field3 timestamp,
>     field4 map<int, float>,
>     field5 text static,
>     field6 text static,
>     field7 text static
>     PRIMARY KEY (field1, field2, field3)
> ) WITH CLUSTERING ORDER BY (field2 ASC, field3 ASC)
>     AND bloom_filter_fp_chance = 0.1
>     AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
>     AND comment = ''
>     AND compaction = {'class': 'org.apache.cassandra.db.compaction.LeveledCompactionStrategy'}
>     AND compression = {'sstable_compression': 'org.apache.cassandra.io.compress.LZ4Compressor'}
>    ...
> {code}
> Following appears in debug log leading up to the error:
> {code}
> DEBUG [SharedPool-Worker-1] 2015-09-17 15:32:06,484  AbstractQueryPager.java:95 - Fetched
101 live rows
> DEBUG [SharedPool-Worker-1] 2015-09-17 15:32:06,484  AbstractQueryPager.java:133 - Remaining
rows to page: 1
> DEBUG [SharedPool-Worker-1] 2015-09-17 15:32:06,485  SelectStatement.java:285 - New maxLimit
for paged count query is 1
> DEBUG [SharedPool-Worker-1] 2015-09-17 15:32:06,486  StorageProxy.java:1646 - Estimated
result rows per range: 2586.375; requested rows: 2, ranges.size(): 762; concurrent range requests:
1
> DEBUG [SharedPool-Worker-1] 2015-09-17 15:32:06,487  AbstractQueryPager.java:95 - Fetched
2 live rows
> ERROR [SharedPool-Worker-1] 2015-09-17 15:32:06,487  QueryMessage.java:132 - Unexpected
error during query
> java.lang.NullPointerException: null
> {code}
> I'm working on recreating to have a workable dataset.  When running cqlsh from remote
node version 2.0.14, query returns successfully



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