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From "Sankar Hariappan (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HIVE-16901) Distcp optimization - One distcp per ReplCopyTask
Date Wed, 14 Jun 2017 18:49:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-16901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sankar Hariappan reassigned HIVE-16901:
---------------------------------------


> Distcp optimization - One distcp per ReplCopyTask 
> --------------------------------------------------
>
>                 Key: HIVE-16901
>                 URL: https://issues.apache.org/jira/browse/HIVE-16901
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Hive, repl
>    Affects Versions: 2.1.0
>            Reporter: Sankar Hariappan
>            Assignee: Sankar Hariappan
>              Labels: DR, replication
>             Fix For: 3.0.0
>
>
> Currently, if a ReplCopyTask is created to copy a list of files, then distcp is invoked
for each and every file. Instead, need to pass the list of source files to be copied to distcp
tool which basically copies the files in parallel and hence gets lot of performance gain.
> If the copy of list of files fail, then traverse the destination directory to see which
file is missing and checksum mismatches, then trigger copy of those files one by one.



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