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https://issues.apache.org/jira/browse/HIVE-25706?focusedWorklogId=709683&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-709683
]
ASF GitHub Bot logged work on HIVE-25706:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 17/Jan/22 00:13
Start Date: 17/Jan/22 00:13
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on pull request #2794:
URL: https://github.com/apache/hive/pull/2794#issuecomment-1013986414
This pull request has been automatically marked as stale because it has not
had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the d...@hive.apache.org list if the patch is in
need of reviews.
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Issue Time Tracking
-------------------
Worklog Id: (was: 709683)
Time Spent: 20m (was: 10m)
> ShuffleHandler: Make sure of properly releasing netty reference counted
> objects
> -------------------------------------------------------------------------------
>
> Key: HIVE-25706
> URL: https://issues.apache.org/jira/browse/HIVE-25706
> Project: Hive
> Issue Type: Bug
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> https://netty.io/wiki/reference-counted-objects.html
> ShuffleHandler log contains issues below when we're on unhappy codepath
> (sendError). Very easily reproducible e.g. with calling ShuffleHandler's http
> port without any parameters. Doesn't cause a user-facing issue, because at
> this point ShuffleHandler already responded to the client, but the exception
> is annoying and implies invalid .release() calls in netty4.
> {code}
> io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1
> at
> io.netty.util.internal.ReferenceCountUpdater.toLiveRealRefCnt(ReferenceCountUpdater.java:74)
> ~[netty-all-4.1.65.Final.jar:4.1.65.Final]
> at
> io.netty.util.internal.ReferenceCountUpdater.release(ReferenceCountUpdater.java:138)
> ~[netty-all-4.1.65.Final.jar:4.1.65.Final]
> at
> io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:100)
> ~[netty-all-4.1.65.Final.jar:4.1.65.Final]
> at
> io.netty.handler.codec.http.DefaultFullHttpResponse.release(DefaultFullHttpResponse.java:116)
> ~[netty-all-4.1.65.Final.jar:4.1.65.Final]
> at
> org.apache.hadoop.hive.llap.shufflehandler.ShuffleHandler$Shuffle.sendError(ShuffleHandler.java:1056)
> ~[classes/:?]
> at
> org.apache.hadoop.hive.llap.shufflehandler.ShuffleHandler$Shuffle.handleRequest(ShuffleHandler.java:827)
> ~[classes/:?]
> at
> org.apache.hadoop.hive.llap.shufflehandler.ShuffleHandler$Shuffle.channelRead(ShuffleHandler.java:728)
> ~[classes/:?]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
> [netty-all-4.1.65.Final.jar:4.1.65.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
> [netty-all-4.1.65.Final.jar:4.1.65.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
> [netty-all-4.1.65.Final.jar:4.1.65.Final]
> at
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
> [netty-all-4.1.65.Final.jar:4.1.65.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
> [netty-all-4.1.65.Final.jar:4.1.65.Final]
> {code}
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