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stack edited comment on HBASE-17825 at 2/23/18 4:24 AM: -------------------------------------------------------- bq. What are our compatibility guarantees on WALPlayer? @InterfaceAudience.Public public class WALPlayer extends Configured implements Tool { A recent fix ensured hbase-1 can play hbase-2 WALs and vice-versa. How does this change output? was (Author: stack): bq. What are our compatibility guarantees on WALPlayer? @InterfaceAudience.Public public class WALPlayer extends Configured implements Tool { A recent fix ensured hbase-1 can play hbase-2 WALs and vice-versa. How does this change > Backup: further optimizations > ----------------------------- > > Key: HBASE-17825 > URL: https://issues.apache.org/jira/browse/HBASE-17825 > Project: HBase > Issue Type: Improvement > Reporter: Vladimir Rodionov > Assignee: Vladimir Rodionov > Priority: Critical > Labels: backup > Fix For: 3.0.0 > > Attachments: HBASE-17825-v1.patch, HBASE-17825-v2.patch, > HBASE-17825-v3.patch, HBASE-17825-v4.patch > > > Some phases of backup and restore can be optimized: > # WALPlayer support for multiple tables > # Run DistCp once per all tables during backup/restore > The eventual goal: > # 2 M/R jobs per backup/restore -- This message was sent by Atlassian JIRA (v7.6.3#76005)