cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Benjamin Lerer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8451) NPE when writetime() or ttl() are nested inside function call
Date Fri, 12 Dec 2014 09:43:13 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14243913#comment-14243913
] 

Benjamin Lerer commented on CASSANDRA-8451:
-------------------------------------------

+1

> NPE when writetime() or ttl() are nested inside function call
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-8451
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8451
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Tyler Hobbs
>            Assignee: Tyler Hobbs
>            Priority: Minor
>             Fix For: 2.0.12, 2.1.3
>
>         Attachments: 8451-2.0.txt
>
>
> When the {{writetime()}} or {{ttl()}} functions are nested inside another function, the
query will result in a NullPointerException:
> {noformat}
> cqlsh> select bigintAsBlob(writetime(durable_writes)) from system.schema_keyspaces;
> <ErrorMessage code=0000 [Server error] message="java.lang.NullPointerException">
> {noformat}
> Here's the stacktrace:
> {noformat}
> ERROR 00:14:56 Unexpected exception during request
> java.lang.NullPointerException: null
> 	at org.apache.cassandra.cql3.statements.Selection$WritetimeOrTTLSelector.compute(Selection.java:538)
~[main/:na]
> 	at org.apache.cassandra.cql3.statements.Selection$FunctionSelector.compute(Selection.java:462)
~[main/:na]
> 	at org.apache.cassandra.cql3.statements.Selection$SelectionWithProcessing.handleRow(Selection.java:434)
~[main/:na]
> 	at org.apache.cassandra.cql3.statements.Selection$ResultSetBuilder.newRow(Selection.java:331)
~[main/:na]
> 	at org.apache.cassandra.cql3.statements.SelectStatement.processColumnFamily(SelectStatement.java:1243)
~[main/:na]
> 	at org.apache.cassandra.cql3.statements.SelectStatement.process(SelectStatement.java:1177)
~[main/:na]
> 	at org.apache.cassandra.cql3.statements.SelectStatement.processResults(SelectStatement.java:274)
~[main/:na]
> 	at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:213)
~[main/:na]
> 	at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:62)
~[main/:na]
> 	at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:238)
~[main/:na]
> 	at org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:260) ~[main/:na]
> 	at org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:119)
~[main/:na]
> 	at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:439)
[main/:na]
> 	at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:335)
[main/:na]
> 	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_40]
> 	at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164)
[main/:na]
> 	at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) [main/:na]
> 	at java.lang.Thread.run(Thread.java:724) [na:1.7.0_40]
> {noformat}
> Basically, it's failing to collect timestamps (or TTLs) when the function is wrapped.
 A similar query that additionally selects {{writetime()}} directly will succeed (because
the timestamps will get collected):
> {noformat}
> cqlsh> select bigintAsBlob(writetime(durable_writes)), writetime(durable_writes) from
system.schema_keyspaces ;
>  bigintAsBlob(writetime(durable_writes)) | writetime(durable_writes)
> -----------------------------------------+---------------------------
>                       0x000509d1865c67f9 |          1418170390571001
>                       0x0000000000000000 |                         0
> {noformat}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message