GitHub user kumarvishal09 opened a pull request: https://github.com/apache/incubator-carbondata/pull/450
[CARBONDATA-545]Added support for offheap storage in query **Problem** There are lots of gc when carbon is processing more number of records during query, which is impacting carbon query performance.To solve this gc problem happening when query output is too huge or when more number of records are processed. **Solution** Currently we are storing all the data which is read during query from carbon data file in heap, when number of query output is huge it is causing more gc. Instead of storing in heap we can store this data in offheap and will clear when scanning is finished for that query. You can merge this pull request into a Git repository by running: $ git pull https://github.com/kumarvishal09/incubator-carbondata QueryOffHeapStorage Alternatively you can review and apply these changes as the patch at: https://github.com/apache/incubator-carbondata/pull/450.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 #450 ---- commit 941d1a32e846b9b4a34667b11cc1468885f0f79a Author: kumarvishal <kumarvishal.1...@gmail.com> Date: 2016-12-14T03:33:41Z Added support for offheap storage in query ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---