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Duo Zhang commented on HBASE-15265: ----------------------------------- {quote} At a glance of HBASE-14949 and comments there, it seems multiwal will have some problem with the patch? {quote} I used to worry about whether the wal entries of one region could be written to different wal files. This may cause some problems, I'm not sure. But this could not happen since wal is a final field in HRegion. And in the DLS mode, we will flush the memstore and clean up the splitted wal files before processing further requests. So it is still safe if a region moves out and then moves back. For DLR, first it does not need to split wal files, and second, we are going to remove the feature? Thanks. > Implement an asynchronous FSHLog > -------------------------------- > > Key: HBASE-15265 > URL: https://issues.apache.org/jira/browse/HBASE-15265 > Project: HBase > Issue Type: Sub-task > Components: wal > Reporter: Duo Zhang > Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-15265-v1.patch, HBASE-15265-v2.patch, > HBASE-15265-v3.patch, HBASE-15265-v4.patch, HBASE-15265-v5.patch, > HBASE-15265-v6.patch, HBASE-15265-v7.patch, HBASE-15265.patch > > -- This message was sent by Atlassian JIRA (v6.3.4#6332)