[jira] [Commented] (HADOOP-18584) [NFS GW] IdleStateHandler is not Shareable

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-18584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17651362#comment-17651362 ] 

ASF GitHub Bot commented on HADOOP-18584:
-----------------------------------------

jojochuang opened a new pull request, #5252:
URL: https://github.com/apache/hadoop/pull/5252

   ### Description of PR
   [HADOOP-18584](https://issues.apache.org/jira/browse/HADOOP-18584)
   
   ### How was this patch tested?
   Draft. Untested.
   
   ### For code changes:
   
   - [x] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
   
   




> [NFS GW] IdleStateHandler is not Shareable
> ------------------------------------------
>
>                 Key: HADOOP-18584
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18584
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 3.4.0
>            Reporter: Wei-Chiu Chuang
>            Priority: Major
>
> The ChannelHandler that can be added to a ChannelPipeline in Netty4 must be Shareable. However, IdleStateHandler, used by Portmap is not.
> We need to fix it otherwise hadoop portmap may fail to start.
> This is a regression from HADOOP-11245 but I consider it not a blocker, because most recent Linux distro supports rpcbind and there's little reason to use Hadoop's portmap.



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