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https://issues.apache.org/jira/browse/NIFI-5841?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Advith Nagappa closed NIFI-5841.
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> PutHive3Streaming processor Mem Leak
> ------------------------------------
>
> Key: NIFI-5841
> URL: https://issues.apache.org/jira/browse/NIFI-5841
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.8.0, 1.7.1
> Environment: Hive 3.1.*
> Reporter: Advith Nagappa
> Assignee: Kei Miyauchi
> Priority: Major
> Fix For: 1.9.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Nifi versions: 1,7.1 and 1.8.0
>
> nifi/nifi-nar-bundles/nifi-hive-bundle/nifi-hive3-processors/src/main/java/org/apache/nifi/processors/hive/PutHive3Streaming.java**
> , line 417 seems redundant,
> {code:java}
> ShutdownHookManager.addShutdownHook(hiveStreamingConnection::close,
> FileSystem.SHUTDOWN_HOOK_PRIORITY + 1){code}
>
> Whereas Hive 3.0.0 did not add a shutdownhook within connect() method, Hive
> 3.1.* does:
>
> hive/streaming/src/java/org/apache/hive/streaming/HiveStreamingConnection.java
> {code:java}
> ShutdownHookManager.addShutdownHook(streamingConnection::close,
> FileSystem.SHUTDOWN_HOOK_PRIORITY + 1);{code}
> This creates two references to the shutdownhook object per transaction out of
> which only one is ever cleaned; resulting in a slow/fast degradation of heap
> space depending on the velocity of transactions.
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