[ https://issues.apache.org/jira/browse/HBASE-5604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253095#comment-13253095 ]
Lars Hofhansl commented on HBASE-5604: -------------------------------------- Done. Thanks Ted. > M/R tool to replay WAL files > ---------------------------- > > Key: HBASE-5604 > URL: https://issues.apache.org/jira/browse/HBASE-5604 > Project: HBase > Issue Type: New Feature > Reporter: Lars Hofhansl > Assignee: Lars Hofhansl > Fix For: 0.94.0, 0.96.0 > > Attachments: 5604-v10.txt, 5604-v11.txt, 5604-v4.txt, 5604-v6.txt, > 5604-v7.txt, 5604-v8.txt, 5604-v9.txt, HLog-5604-v3.txt > > > Just an idea I had. Might be useful for restore of a backup using the HLogs. > This could an M/R (with a mapper per HLog file). > The tool would get a timerange and a (set of) table(s). We'd pick the right > HLogs based on time before the M/R job is started and then have a mapper per > HLog file. > The mapper would then go through the HLog, filter all WALEdits that didn't > fit into the time range or are not any of the tables and then uses > HFileOutputFormat to generate HFiles. > Would need to indicate the splits we want, probably from a live table. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira