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From "Brice Figureau (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-10630) NullPointerException in DeletionInfo.isDeleted
Date Sat, 31 Oct 2015 16:03:27 GMT
Brice Figureau created CASSANDRA-10630:
------------------------------------------

             Summary: NullPointerException in DeletionInfo.isDeleted
                 Key: CASSANDRA-10630
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10630
             Project: Cassandra
          Issue Type: Bug
          Components: CQL
         Environment: Linux 64 bits
            Reporter: Brice Figureau


The following CQL query:
{code:sql}
select count(*) from messages;
{code}

sometimes produces the following stack trace:
{code}
ERROR [SharedPool-Worker-1] 2015-10-31 16:32:22,606 ErrorMessage.java:251 - Unexpected exception
during request
java.lang.NullPointerException: null
	at org.apache.cassandra.db.DeletionInfo.isDeleted(DeletionInfo.java:138) ~[apache-cassandra-2.1.11.jar:2.1.11]
	at org.apache.cassandra.service.pager.RangeSliceQueryPager.containsPreviousLast(RangeSliceQueryPager.java:102)
~[apache-cassandra-2.1.11.jar:2.1.11]
	at org.apache.cassandra.service.pager.AbstractQueryPager.fetchPage(AbstractQueryPager.java:119)
~[apache-cassandra-2.1.11.jar:2.1.11]
	at org.apache.cassandra.service.pager.RangeSliceQueryPager.fetchPage(RangeSliceQueryPager.java:39)
~[apache-cassandra-2.1.11.jar:2.1.11]
	at org.apache.cassandra.cql3.statements.SelectStatement.pageCountQuery(SelectStatement.java:286)
~[apache-cassandra-2.1.11.jar:2.1.11]
	at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:230)
~[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.process(QueryProcessor.java:260) ~[apache-cassandra-2.1.11.jar:2.1.11]
	at org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:122) ~[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_51]
	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_51]
{code}

After taking a snapshot on all participating nodes, the query starts to apparently succeed.

The table schema is:
{code:sql}
CREATE TABLE akka.messages (
    persistence_id text,
    partition_nr bigint,
    sequence_nr bigint,
    message blob,
    used boolean static,
    PRIMARY KEY ((persistence_id, partition_nr), sequence_nr)
) WITH CLUSTERING ORDER BY (sequence_nr ASC)
    AND bloom_filter_fp_chance = 0.01
    AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
    AND comment = ''
    AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy'}
    AND compression = {'sstable_compression': 'org.apache.cassandra.io.compress.LZ4Compressor'}
    AND dclocal_read_repair_chance = 0.1
    AND default_time_to_live = 0
    AND gc_grace_seconds = 864000
    AND max_index_interval = 2048
    AND memtable_flush_period_in_ms = 0
    AND min_index_interval = 128
    AND read_repair_chance = 0.0
    AND speculative_retry = '99.0PERCENTILE';
{code}

(this is from the [Akka Cassandra Persistence journal plugin|https://github.com/krasserm/akka-persistence-cassandra])






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