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From "Appy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-18640) Move mapreduce out of hbase-server into separate hbase-mapreduce moduel
Date Sat, 26 Aug 2017 09:50:02 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Appy updated HBASE-18640:
-------------------------
    Release Note: 
- Moves all org.apache.hadoop.hbase.mapreduce.* (except LoadIncrementalHFiles) and org.apache.hadoop.hbase.mapred.*
classes from hbase-server module to new hbase-mapreduce module.
- Also moves following tools from hbase-server module to hbase-mapreduce module: CompactionTool,
ExportSnapshot, PerformanceEvaluation, LoadTestTool
- Very minor breakages in  LoadTestTool(LimitedPrivate HBaseInterfaceAudience.TOOLS)

  was:
- Moves all org.apache.hadoop.hbase.mapreduce.* (except LoadIncrementalHFiles) and org.apache.hadoop.hbase.mapred.*
classes from hbase-server module to new hbase-mapreduce module.
- Also moves following tools from hbase-server module to hbase-mapreduce module: CompactionTool,
ExportSnapshot, PerformanceEvaluation, LoadTestTool
- Very minor breakages in  LimitedPrivate 


> Move mapreduce out of hbase-server into separate hbase-mapreduce moduel
> -----------------------------------------------------------------------
>
>                 Key: HBASE-18640
>                 URL: https://issues.apache.org/jira/browse/HBASE-18640
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Appy
>            Assignee: Appy
>             Fix For: 2.0.0-alpha-3
>
>         Attachments: HBASE-18640.branch-2.001.patch, HBASE-18640.master.001.patch, HBASE-18640.master.002.patch,
HBASE-18640.master.003.patch, HBASE-18640.master.003.patch, HBASE-18640.master.004.patch,
HBASE-18640.master.004.patch, HBASE-18640.master.005.patch, HBASE-18640.master.006.patch,
HBASE-18640.master.007.patch, HBASE-18640.master.008.patch
>
>
> (Couldn't find another dedicated jira, so creating new one).
> Uploaded patch which is moving ~60 files to the new module. Few notes:
> - The classes remaining in hbase-server are the ones which are intensively coupled with
visibility labels/wal/filesystem/hfile. These can not be migrated to new module until corresponding
subcomponents are untangled out of hbase-server into their own separate modules.
> - Almost all mapreduce tests uses HBaseTestingUtil, so they can't be moved to hbase-mapreduce
module. Given these dependency constraints, one way would be having a separate module for
tests:
> hbase-mapreduce <---- hbase-server <------- hbase-mapreduce-tests 
> Imo, this makes sense and looks fine.
> The only issue is - yetus' pre-commit. It won't run tests in hbase-mapreduce-tests module
if something changed in just hbase-mapreduce. However, yetus' limitation shouldn't warrant
against the idea.
> So i'd say that we should go that way, unless there are better suggestions.



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