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https://issues.apache.org/jira/browse/NIFI-5044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16473373#comment-16473373
]
ASF GitHub Bot commented on NIFI-5044:
--------------------------------------
GitHub user bdesert opened a pull request:
https://github.com/apache/nifi/pull/2695
NIFI-5044 SelectHiveQL accept only one statement
SelectHiveQL support only single SELECT statement.
This change adds support for pre- and post- select statements.
It will be useful for configuration queries, i.e. "set
tez.queue.name=default", and others.
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bdesert/nifi NIFI-5044_SelectHiveQL_
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/nifi/pull/2695.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2695
----
commit 5e4c2b00405418fc4673e851740129e94f59caab
Author: Ed B <eberezitsky@...>
Date: 2018-05-13T05:24:09Z
NIFI-5044 SelectHiveQL accept only one statement
SelectHiveQL support only single SELECT statement.
This change adds support for pre- and post- select statements.
It will be useful for configuration queries, i.e. "set
tez.queue.name=default", and others.
----
> SelectHiveQL accept only one statement
> --------------------------------------
>
> Key: NIFI-5044
> URL: https://issues.apache.org/jira/browse/NIFI-5044
> Project: Apache NiFi
> Issue Type: Improvement
> Affects Versions: 1.2.0
> Reporter: Davide Isoardi
> Assignee: Ed Berezitsky
> Priority: Critical
>
> In [this
> |[https://github.com/apache/nifi/commit/bbc714e73ba245de7bc32fd9958667c847101f7d]
> ] commit claims to add support to running multiple statements both on
> SelectHiveQL and PutHiveQL; instead, it adds only the support to PutHiveQL,
> so SelectHiveQL still lacks this important feature. @Matt Burgess, I saw that
> you worked on that, is there any reason for this? If not, can we support it?
> If I try to execute this query:
> {quote}set hive.vectorized.execution.enabled = false; SELECT * FROM table_name
> {quote}
> I have this error:
>
> {quote}2018-04-05 13:35:40,572 ERROR [Timer-Driven Process Thread-146]
> o.a.nifi.processors.hive.SelectHiveQL
> SelectHiveQL[id=243d4c17-b1fe-14af-ffff-ffffee8ce15e] Unable to execute
> HiveQL select query set hive.vectorized.execution.enabled = false; SELECT *
> FROM table_name for
> StandardFlowFileRecord[uuid=0e035558-07ce-473b-b0d4-ac00b8b1df93,claim=StandardContentClaim
> [resourceClaim=StandardResourceClaim[id=1522824912161-2753,
> container=default, section=705], offset=838441,
> length=25],offset=0,name=cliente_attributi.csv,size=25] due to
> org.apache.nifi.processor.exception.ProcessException: java.sql.SQLException:
> The query did not generate a result set!; routing to failure: {}
> org.apache.nifi.processor.exception.ProcessException: java.sql.SQLException:
> The query did not generate a result set!
> at
> org.apache.nifi.processors.hive.SelectHiveQL$2.process(SelectHiveQL.java:305)
> at
> org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2529)
> at
> org.apache.nifi.processors.hive.SelectHiveQL.onTrigger(SelectHiveQL.java:275)
> at
> org.apache.nifi.processors.hive.SelectHiveQL.lambda$onTrigger$0(SelectHiveQL.java:215)
> at
> org.apache.nifi.processor.util.pattern.PartialFunctions.onTrigger(PartialFunctions.java:114)
> at
> org.apache.nifi.processor.util.pattern.PartialFunctions.onTrigger(PartialFunctions.java:106)
> at
> org.apache.nifi.processors.hive.SelectHiveQL.onTrigger(SelectHiveQL.java:215)
> at
> org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1120)
> at
> org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:147)
> at
> org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
> at
> org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.sql.SQLException: The query did not generate a result set!
> at org.apache.hive.jdbc.HiveStatement.executeQuery(HiveStatement.java:438)
> at
> org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
> at
> org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
> at
> org.apache.nifi.processors.hive.SelectHiveQL$2.process(SelectHiveQL.java:293)
> {quote}
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