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https://issues.apache.org/jira/browse/NIFI-4371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16210714#comment-16210714
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ASF GitHub Bot commented on NIFI-4371:
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Github user pvillard31 commented on the issue:
https://github.com/apache/nifi/pull/2138
I already noticed this error while working on others PRs (I'm a bit
surprised I didn't notice the NPE on this PR...). It's because we're checking
if the processor is valid before enabling expression validation
(https://github.com/apache/nifi/blob/master/nifi-mock/src/main/java/org/apache/nifi/util/StandardProcessorTestRunner.java#L169).
We can't really do it the other way around without changing a lot of things.
I updated the PR to just check if ``expectExpressions`` is null and, if
yes, return false. This way we can use ``isExpressionLanguagePresent()`` in a
custom validate method.
> Add support for query timeout in Hive processors
> ------------------------------------------------
>
> Key: NIFI-4371
> URL: https://issues.apache.org/jira/browse/NIFI-4371
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Reporter: Pierre Villard
> Assignee: Pierre Villard
> Attachments: Screen Shot 2017-09-09 at 4.31.21 PM.png, Screen Shot
> 2017-09-09 at 6.38.51 PM.png, Screen Shot 2017-09-09 at 6.40.48 PM.png
>
>
> With HIVE-4924 it is possible to set a query timeout when executing a query
> against Hive (starting with Hive 2.1). Right now, NiFi is built using Hive
> 1.2.1 and this feature is not available by default (the method is not
> implemented in the driver). However, if building NiFi with specific profiles
> this feature can be used.
> The objective is to expose the query timeout parameter in the processor and
> enable expression language. If the version of the driver is not implementing
> the query timeout the processor will be in invalid state (unless expression
> language is used, and in this case, the flow file will be routed to the
> failure relationship).
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