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Posted to issues@carbondata.apache.org by manishgupta88 <gi...@git.apache.org> on 2017/04/12 10:20:20 UTC

[GitHub] incubator-carbondata pull request #788: [CARBONDATA-914] Clear BTree and Dic...

GitHub user manishgupta88 opened a pull request:

    https://github.com/apache/incubator-carbondata/pull/788

    [CARBONDATA-914] Clear BTree and Dictionary instances from LRU cache on table drop

    After drop table dictionary and BTree instances are not getting cleared from driver memory. Due to this memory will keep growing and after some time GC problems will occur. In real case scenarios usually driver memory is on lower side hence it is more prone to GC problems.
    
    Solution: When a table is being dropped clear BTree and dictionary instances from LRU cache.

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

    $ git pull https://github.com/manishgupta88/incubator-carbondata clear_driver_cache_after_drop_table

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

    https://github.com/apache/incubator-carbondata/pull/788.patch

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

    This closes #788
    
----
commit b853ad01e8aea7b2d1629c1377049449119412d2
Author: manishgupta88 <to...@gmail.com>
Date:   2017-04-11T06:51:35Z

    Problem: After drop table dictionary and BTree instances are not getting cleared from driver memory. Due to this memory will keep growing and after some time GC problems will occur. In real case scenarios usually driver memory is on lower side hence it is more prone to GC problems.
    
    Solution: When a table is being clear BTree and dictionary instances from LRU cache.

----


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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by gvramana <gi...@git.apache.org>.
Github user gvramana commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    LGTM


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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by CarbonDataQA <gi...@git.apache.org>.
Github user CarbonDataQA commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    Build Success with Spark 1.6.2, Please check CI http://136.243.101.176:8080/job/ApacheCarbonPRBuilder/1592/



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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by CarbonDataQA <gi...@git.apache.org>.
Github user CarbonDataQA commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    Build Success with Spark 1.6.2, Please check CI http://136.243.101.176:8080/job/ApacheCarbonPRBuilder/1604/



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[GitHub] incubator-carbondata pull request #788: [CARBONDATA-914] Clear BTree and Dic...

Posted by manishgupta88 <gi...@git.apache.org>.
GitHub user manishgupta88 reopened a pull request:

    https://github.com/apache/incubator-carbondata/pull/788

    [CARBONDATA-914] Clear BTree and Dictionary instances from LRU cache on table drop

    Changes includes:
    1. Support cleaning of BTree and dictionary instances when a table is being dropped.
    2. Support clearing the access count for each segment immediately after block pruning rather then loading all the segments first and at lats clearing access count for all the segments together.

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

    $ git pull https://github.com/manishgupta88/incubator-carbondata clear_driver_cache_after_drop_table

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

    https://github.com/apache/incubator-carbondata/pull/788.patch

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

    This closes #788
    
----
commit c9aab5a433ef88413164b2ef02b8d0c35c6c824f
Author: manishgupta88 <to...@gmail.com>
Date:   2017-04-11T06:51:35Z

    Problem: After drop table dictionary and BTree instances are not getting cleared from driver memory. Due to this memory will keep growing and after some time GC problems will occur. In real case scenarios usually driver memory is on lower side hence it is more prone to GC problems.
    
    Solution:
    1. When a table is being clear BTree and dictionary instances from LRU cache.
    2. Clear the access count for each segment immediately after block pruning rather then loading all the segments first and at lats clearing access count for all the segments together.

----


---
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---

[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by CarbonDataQA <gi...@git.apache.org>.
Github user CarbonDataQA commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    Build Success with Spark 1.6.2, Please check CI http://136.243.101.176:8080/job/ApacheCarbonPRBuilder/1613/



---
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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by CarbonDataQA <gi...@git.apache.org>.
Github user CarbonDataQA commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    Build Success with Spark 1.6.2, Please check CI http://136.243.101.176:8080/job/ApacheCarbonPRBuilder/1586/



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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by manishgupta88 <gi...@git.apache.org>.
Github user manishgupta88 commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    https://issues.apache.org/jira/browse/CARBONDATA-924


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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by gvramana <gi...@git.apache.org>.
Github user gvramana commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    Drop of all cache should happen in refresh flow, should not be directly deleted in command execution. Please raise another Jira to track the same.


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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by CarbonDataQA <gi...@git.apache.org>.
Github user CarbonDataQA commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    Build Success with Spark 1.6.2, Please check CI http://136.243.101.176:8080/job/ApacheCarbonPRBuilder/1602/



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[GitHub] incubator-carbondata pull request #788: [CARBONDATA-914] Clear BTree and Dic...

Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:

    https://github.com/apache/incubator-carbondata/pull/788


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[GitHub] incubator-carbondata pull request #788: [CARBONDATA-914] Clear BTree and Dic...

Posted by manishgupta88 <gi...@git.apache.org>.
Github user manishgupta88 closed the pull request at:

    https://github.com/apache/incubator-carbondata/pull/788


---
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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by CarbonDataQA <gi...@git.apache.org>.
Github user CarbonDataQA commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    Build Success with Spark 1.6.2, Please check CI http://136.243.101.176:8080/job/ApacheCarbonPRBuilder/1587/



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[GitHub] incubator-carbondata issue #788: [CARBONDATA-914] Clear BTree and Dictionary...

Posted by CarbonDataQA <gi...@git.apache.org>.
Github user CarbonDataQA commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/788
  
    Build Success with Spark 1.6.2, Please check CI http://136.243.101.176:8080/job/ApacheCarbonPRBuilder/1612/



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