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ramkrishna.s.vasudevan commented on HBASE-7006: ----------------------------------------------- It is more dependent on ZK now. will these exceptions cause any problem if it happens always {code} catch (KeeperException e) { + LOG.warn("Cannot get lastFlushedSequenceId from ZooKeeper for server=" + regionServerName + + "; region=" + encodedRegionName, e); + } {code} {code} + } catch (KeeperException e) { + LOG.warn("Cannot remove recovering regions from ZooKeeper", e); + } {code} > [MTTR] Study distributed log splitting to see how we can make it faster > ----------------------------------------------------------------------- > > Key: HBASE-7006 > URL: https://issues.apache.org/jira/browse/HBASE-7006 > Project: HBase > Issue Type: Bug > Components: MTTR > Reporter: stack > Assignee: Jeffrey Zhong > Priority: Critical > Fix For: 0.95.1 > > Attachments: hbase-7006-combined.patch, hbase-7006-combined-v1.patch, > LogSplitting Comparison.pdf, > ProposaltoimprovelogsplittingprocessregardingtoHBASE-7006-v2.pdf > > > Just saw interesting issue where a cluster went down hard and 30 nodes had > 1700 WALs to replay. Replay took almost an hour. It looks like it could run > faster that much of the time is spent zk'ing and nn'ing. > Putting in 0.96 so it gets a look at least. Can always punt. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira