[ https://issues.apache.org/jira/browse/HBASE-7245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-7245: ------------------------- Fix Version/s: (was: 2.0.0) > Recovery on failed snapshot restore > ----------------------------------- > > Key: HBASE-7245 > URL: https://issues.apache.org/jira/browse/HBASE-7245 > Project: HBase > Issue Type: Bug > Components: Client, master, regionserver, snapshots, Zookeeper > Reporter: Jonathan Hsieh > Priority: Major > > Restore will do updates to the file system and to meta. it seems that an > inopportune failure before meta is completely updated could result in an > inconsistent state that would require hbck to fix. > We should define what the semantics are for recovering from this. Some > suggestions: > 1) Fail Forward (see some log saying restore's meta edits not completed, then > gather information necessary to build it all from fs, and complete meta > edits.). > 2) Fail backwards (see some log saying restore's meta edits not completed, > delete incomplete snapshot region entries from meta.) > I think I prefer 1 -- if two processes end somehow updating (somehow the > original master didn't die, and a new one started up) they would be > idempotent. If we used 2, we could still have a race and still be in a bad > place. -- This message was sent by Atlassian JIRA (v7.6.3#76005)