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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-4672) NPE extracting samplerConfiguration from InputSplit
Date Wed, 28 Jun 2017 23:46:00 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-4672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16067470#comment-16067470
] 

Josh Elser commented on ACCUMULO-4672:
--------------------------------------

FYI [~kturner], this is the issue I had mentioned in IRC today.

> NPE extracting samplerConfiguration from InputSplit
> ---------------------------------------------------
>
>                 Key: ACCUMULO-4672
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4672
>             Project: Accumulo
>          Issue Type: Bug
>          Components: mapreduce
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>            Priority: Minor
>             Fix For: 1.8.2
>
>
> {noformat}
> Caused by: java.lang.NullPointerException
> 	at org.apache.accumulo.core.client.mapred.AbstractInputFormat$AbstractRecordReader.initialize(AbstractInputFormat.java:608)
> 	at org.apache.accumulo.core.client.mapred.AccumuloRowInputFormat$1.initialize(AccumuloRowInputFormat.java:60)
> 	at org.apache.accumulo.core.client.mapred.AccumuloRowInputFormat.getRecordReader(AccumuloRowInputFormat.java:84)
> {noformat}
> I still need to dig into this one and try to write a test case for it that doesn't involve
Hive (as it may have just been something that I was doing). Best as I can tell..
> AbstractInputFormat extracts a default table configuration object from the Job's Configuration
class:
> {code}
>       InputTableConfig tableConfig = getInputTableConfig(job, baseSplit.getTableName());
> {code}
> Eventually, the same class tries to extract the samplerConfiguration from this tableConfig
(after noticing it is not present in the InputSplit) and this throws an NPE. Somehow the tableConfig
was null. It very well could be that Hive was to blame, I just wanted to make sure that this
was captured before I forgot about it.



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