[jira] [Resolved] (HDFS-17080) Fix ec connection leak (GitHub PR#5807)

["Wei-Chiu Chuang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-17080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wei-Chiu Chuang resolved HDFS-17080.
------------------------------------
    Fix Version/s: 3.5.0
       Resolution: Fixed

> Fix ec connection leak (GitHub PR#5807)
> ---------------------------------------
>
>                 Key: HDFS-17080
>                 URL: https://issues.apache.org/jira/browse/HDFS-17080
>             Project: Hadoop HDFS
>          Issue Type: Task
>            Reporter: Wei-Chiu Chuang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.5.0
>
>
> Creating this jira to track GitHub PR #5807.
> {quote}Description of PR
> This PR fixes EC connection leak if got exception when constructing reader.
> How was this patch tested?
> Cluster: Presto
> Data: EC
> Query: select col from table(EC data) limit 10
> Presto is a long time running process to deal with query.
> In this case, when it gets 10 records, it will interrupt other threads.
> Other threads may be in constructing reader or getting next record.
> If getting next record is interrupted, it will be caught and Presto will close it.
> But if constructing reader is interrupted, Presto cannot close it because reader in Presto has not been created.
> So we can observe whether EC connection is closed when doing EC limit query.
> Use netstat command.{quote}



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