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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-2653) index scan errors out when zero columns are requested
Date Mon, 27 Jun 2011 17:34:47 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-2653?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sylvain Lebresne updated CASSANDRA-2653:
----------------------------------------

    Attachment: 2653_v2.patch

I actually agree with taking the impact. Especially given that there is actually very little
cases where it will make an actual difference anyway.

Attaching patch (2653_v2, based on 0.7) that implement the idea and add back the sanity check.

> index scan errors out when zero columns are requested
> -----------------------------------------------------
>
>                 Key: CASSANDRA-2653
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2653
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7.6, 0.8.0 beta 2
>            Reporter: Jonathan Ellis
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>             Fix For: 0.7.7, 0.8.1
>
>         Attachments: 0001-Handle-data-get-returning-null-in-secondary-indexes.patch,
0001-Handle-null-returns-in-data-index-query-v0.7.patch, 0001-Reset-SSTII-in-EchoedRow-constructor.patch,
2653_v2.patch, v1-0001-CASSANDRA-2653-reproduce-regression.txt
>
>
> As reported by Tyler Hobbs as an addendum to CASSANDRA-2401,
> {noformat}
> ERROR 16:13:38,864 Fatal exception in thread Thread[ReadStage:16,5,main]
> java.lang.AssertionError: No data found for SliceQueryFilter(start=java.nio.HeapByteBuffer[pos=10
lim=10 cap=30], finish=java.nio.HeapByteBuffer[pos=17 lim=17 cap=30], reversed=false, count=0]
in DecoratedKey(81509516161424251288255223397843705139, 6b657931):QueryPath(columnFamilyName='cf',
superColumnName='null', columnName='null') (original filter SliceQueryFilter(start=java.nio.HeapByteBuffer[pos=10
lim=10 cap=30], finish=java.nio.HeapByteBuffer[pos=17 lim=17 cap=30], reversed=false, count=0])
from expression 'cf.626972746864617465 EQ 1'
> 	at org.apache.cassandra.db.ColumnFamilyStore.scan(ColumnFamilyStore.java:1517)
> 	at org.apache.cassandra.service.IndexScanVerbHandler.doVerb(IndexScanVerbHandler.java:42)
> 	at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:662)
> {noformat}

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