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From ravipesala <>
Subject [GitHub] incubator-carbondata pull request #709: [WIP] Improvements in query
Date Wed, 29 Mar 2017 19:00:53 GMT
GitHub user ravipesala opened a pull request:

    [WIP] Improvements in query

    Following are the list of improvements done in this part of PR.
    1. Removed multiple creation of array and copy of it in Dimension and measure chunk readers.
    2. Simplified logic of finding offsets of nodictionary keys in the class SafeVariableLengthDimensionDataChunkStore.
    3. Avoided byte array creation and copy for nodictionary columns in case of vectorized
reader. Instead directly sending the length and offset to vector.
    4. Removed unnecessary decoder plan additions to oprtimized plan. It can optimize the
codegen flow.
    5. Updated CompareTest to take table blocksize and kept as 32 Mb in order to make use
of small sorting when doing take ordered in spark.

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

    $ git pull minor-perf-improv

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 #709
commit eaa964425ffa784d905b12045e6e719c55eb1164
Author: ravipesala <>
Date:   2017-03-05T15:02:35Z

    Removed unnecessary array copy and bitset checking

commit 62914d866063a2606f6396b9912cf4466cbacef9
Author: ravipesala <>
Date:   2017-03-28T15:24:26Z

    OPtimized code

commit 45a4dcab42842f61d7cf28c5834bb4810c77bcbc
Author: ravipesala <>
Date:   2017-03-29T13:57:11Z

    Added table_blocksize option.

commit 57d135937843ce89eb3805cddad6034cf9db3aaf
Author: ravipesala <>
Date:   2017-03-29T18:49:36Z

    Removed unnecessary plan from optimized plan.


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