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https://issues.apache.org/jira/browse/HBASE-7006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13659817#comment-13659817
]
rajeshbabu commented on HBASE-7006:
-----------------------------------
if any failures during .META. assignment other than master shutdown/stop we are
infinitely waiting until .META. is assigned.
{code}
enableServerShutdownHandler();
this.catalogTracker.waitForMeta();
// Above check waits for general meta availability but this does not
// guarantee that the transition has completed
this.assignmentManager.waitForAssignment(HRegionInfo.FIRST_META_REGIONINFO);
{code}
Only chance we will come out from initialization before assigning META is
master shutdown/stop.
then any way we will not block in loop as well.
{code}
private void loop() {
long lastMsgTs = 0l;
long now = 0l;
while (!this.stopped) {
now = System.currentTimeMillis();
if ((now - lastMsgTs) >= this.msgInterval) {
doMetrics();
lastMsgTs = System.currentTimeMillis();
}
stopSleeper.sleep();
}
}
{code}
> [MTTR] Improve Region Server Recovery Time - Distributed Log Replay
> -------------------------------------------------------------------
>
> Key: HBASE-7006
> URL: https://issues.apache.org/jira/browse/HBASE-7006
> Project: HBase
> Issue Type: New Feature
> Components: MTTR
> Reporter: stack
> Assignee: Jeffrey Zhong
> Priority: Critical
> Fix For: 0.98.0, 0.95.1
>
> Attachments: hbase-7006-addendum.patch, hbase-7006-combined.patch,
> hbase-7006-combined-v1.patch, hbase-7006-combined-v4.patch,
> hbase-7006-combined-v5.patch, hbase-7006-combined-v6.patch,
> hbase-7006-combined-v7.patch, hbase-7006-combined-v8.patch,
> hbase-7006-combined-v9.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.
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