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From xuchuanyin <>
Subject [GitHub] carbondata pull request #1175: [CARBONDATA-1281] Support multiple temp dirs ...
Date Sat, 15 Jul 2017 06:34:26 GMT
GitHub user xuchuanyin opened a pull request:

    [CARBONDATA-1281] Support multiple temp dirs for writing temp files while loading

    # Modifications
    This feature mainly focus on avoiding disk hot-spot in single massive data loading, changes
are made in two parts: 
    1. randomly choose a yarn local folder to write sort temp file in sort-process;
    2.randomly choose a yarn local folder to write carbondata file in write-process.
    # Usage
    To enable this feature, user should enable `carbon.using.multi.temp.dir=true` and `carbon.use.local.dir=true`.
    # Performance
    In my case, this feature improves the loading performance from 35M/s/node to 70+M/s/node

You can merge this pull request into a Git repository by running:

    $ git pull feature_multiple_temp_dir_for_load

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1175
commit 35cba3d49ccb536328545fd705020edcc50189af
Author: xuchuanyin <>
Date:   2017-07-05T12:56:33Z

    Merge pull request #3 from apache/master
    sync code

commit c778f22dbda7f0b36a69a10db5d008744cdb99f3
Author: ravikiran23 <>
Date:   2017-06-22T12:48:19Z

    [CARBONDATA-1214] Changing the delete syntax as in the hive for segment deletion
    This closes #1078

commit 46a53962d4913b06d0f4be61c48053106da4a108
Author: jackylk <>
Date:   2017-07-03T13:54:39Z

    modify compare test
    fix style
    change table

commit a54dda9b7dcd0749e6b187f2579a5b867f421eaf
Author: jatin <>
Date:   2017-07-05T12:04:19Z

    [CARBONDATA-1266][PRESTO] Fixed issue for non existing table
    This closes #1137

commit 32e3d1f7a4ff09309ebf0d4e7315e5dbef2765b4
Author: xuchuanyin <>
Date:   2017-07-05T13:00:45Z

    [CARBONDATA-1267] Add short_int case branch in DeltaIntegalCodec
    This closes #1139

commit a479d1672bfbe1c2b92b44737f93a2e14cbef2a7
Author: Geetika Gupta <>
Date:   2017-07-06T06:14:06Z

    [CARBONDATA-1269][PRESTO] Fixed bug for select operation in non existing database
    This closes #1143

commit b69771370f95926999b7cb0501c38ae7202cebf3
Author: sgururajshetty <>
Date:   2017-07-06T06:23:38Z

    [CARBONDATA-1270] Documentation update for Delete by ID and DATE syntax and example
    This closes #1141

commit 4d2d518a3d5176d70f81d83c5782ef56f7118800
Author: ashok.blend <>
Date:   2017-07-08T10:57:41Z

    [CARBONDATA-1282] Choose BatchedDatasource scan only if schema fits codegen
    This closes #1148

commit 5e74e50547a98e2452b296f839a020d978225cf2
Author: chenliang613 <>
Date:   2017-07-08T15:53:02Z

    [CARBONDATA-1280] Solve HiveExample dependency issues and fix spark 1.6 CI
    This closes #1150

commit 79a777052a8e5ead117f7424a6daf974dc405c26
Author: Liang Chen <>
Date:   2017-07-08T22:32:10Z

    fix doc, remove invalid description
    This closes #1151

commit 16938770f54eaf5ec646df2692418e726d9defd4
Author: kunalkapoor <>
Date:   2017-07-10T06:42:10Z

    [CARBONDATA-1229] acquired meta.lock during table drop
    This closes #1153

commit f5e4bb083f166d62de38267c7503ab3609e1fcca
Author: czg516516 <>
Date:   2017-07-11T03:01:47Z

    [CARBONDATA-1289] remove unused method
    This closes #1157

commit 7e433115a925e6a477d8de157596cc6eb16dfa17
Author: xuchuanyin <>
Date:   2017-07-15T03:14:46Z

    fix confilicts

commit 76b071846c226348b3a934edfda63454ee973254
Author: xuchuanyin <>
Date:   2017-07-15T06:12:35Z

    Support multiple temp dirs for writing files while loading data


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