[ https://issues.apache.org/jira/browse/HBASE-15204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ramkrishna.s.vasudevan updated HBASE-15204: ------------------------------------------- Status: Patch Available (was: Open) > Try to estimate the cell count for adding into WALEdit > ------------------------------------------------------ > > Key: HBASE-15204 > URL: https://issues.apache.org/jira/browse/HBASE-15204 > Project: HBase > Issue Type: Sub-task > Components: regionserver > Reporter: ramkrishna.s.vasudevan > Assignee: ramkrishna.s.vasudevan > Fix For: 2.0.0, 1.3.0 > > Attachments: HBASE-15204.patch, HBASE-15204_1.patch, > HBASE-15204_1.patch, HBASE-15204_2.patch, HBASE-15204_3.patch, > HBASE-15204_3.patch, WAlEdit_add_allocation.jpg, > WAlEdit_add_allocation_after_patch.jpg > > > The write path profiling shows that when we try to add Cells to WALEdits we > try to do a lot of Array copy inorder to grow the Arraylist backing the > WALEdits. In a simple one min profiling of the write path with 50 YCSB > threads shows around 261MB of allocation done for the Array copy to happen. > We can try to avoid that. -- This message was sent by Atlassian JIRA (v6.3.4#6332)