[ https://issues.apache.org/jira/browse/HBASE-15441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15198389#comment-15198389 ]
Gary Helmling commented on HBASE-15441: --------------------------------------- +1 on v5 > Fix WAL splitting when region has moved multiple times > ------------------------------------------------------ > > Key: HBASE-15441 > URL: https://issues.apache.org/jira/browse/HBASE-15441 > Project: HBase > Issue Type: Bug > Affects Versions: 1.1.0, 1.2.0 > Reporter: Elliott Clark > Assignee: Elliott Clark > Priority: Blocker > Fix For: 2.0.0, 1.3.0 > > Attachments: HBASE-15441-v1.patch, HBASE-15441-v2.patch, > HBASE-15441-v3.patch, HBASE-15441-v4.patch, HBASE-15441-v5.patch, > HBASE-15441.patch > > > Currently WAL splitting is broken when a region has been opened multiple > times in recent minutes. > Region open and region close write event markers to the wal. These markers > should have the sequence id in them. However it is currently getting 1. That > means that if a region has moved multiple times in the last few mins then > multiple split log workers will try and create the recovered edits file for > sequence id 1. One of the workers will fail and on failing they will delete > the recovered edits. Causing all split wal attempts to fail. > We need to: > # make sure that close get the correct sequence id for open. > # Filter all region events from recovered edits > It appears that the close event with a sequence id of one is coming from > region warm up. -- This message was sent by Atlassian JIRA (v6.3.4#6332)