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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CARBONDATA-241) OOM error during query execution in long run
Date Sat, 17 Sep 2016 19:42:20 GMT

    [ https://issues.apache.org/jira/browse/CARBONDATA-241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15499569#comment-15499569
] 

ASF GitHub Bot commented on CARBONDATA-241:
-------------------------------------------

Github user gvramana commented on a diff in the pull request:

    https://github.com/apache/incubator-carbondata/pull/158#discussion_r79290196
  
    --- Diff: hadoop/src/test/java/org/apache/carbondata/hadoop/ft/CarbonInputMapperTest.java
---
    @@ -129,6 +132,37 @@ private int countTheColumns(String outPath) throws Exception {
         return 0;
       }
     
    +  private void runJob(String outPath, CarbonProjection projection, Expression filter)
    --- End diff --
    
    move back the code to original place


> OOM error during query execution in long run
> --------------------------------------------
>
>                 Key: CARBONDATA-241
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-241
>             Project: CarbonData
>          Issue Type: Bug
>            Reporter: kumar vishal
>            Assignee: kumar vishal
>
> **Problem:** During long run query execution is taking more time and it is throwing out
of memory issue.
> **Reason**: In compaction we are compacting segments and each segment metadata is loaded
in memory. So after compaction compacted segments are invalid but its meta data is not removed
from memory because of this duplicate metadata is pile up and it is taking more memory and
after few days query exeution is throwing OOM
> **Solution**: Need to remove invalid blocks from memory
>  



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