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https://issues.apache.org/jira/browse/HBASE-5075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217264#comment-13217264
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stack commented on HBASE-5075:
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bq. Do you means another project instead of writing code into hbase?
Yes sir. Process babysitters is a pretty mature domain w/ a wide variety of
existing programs that have been debugged and are able to do this for you.
What do you think about using one of the existing solutions rather than write
your own?
> regionserver crashed and failover
> ---------------------------------
>
> Key: HBASE-5075
> URL: https://issues.apache.org/jira/browse/HBASE-5075
> Project: HBase
> Issue Type: Improvement
> Components: monitoring, regionserver, replication, zookeeper
> Affects Versions: 0.92.1
> Reporter: zhiyuan.dai
> Fix For: 0.90.5
>
> Attachments: Degion of Failure Detection.pdf, HBase-5075-shell.patch,
> HBase-5075-src.patch
>
>
> regionserver crashed,it is too long time to notify hmaster.when hmaster know
> regionserver's shutdown,it is long time to fetch the hlog's lease.
> hbase is a online db, availability is very important.
> i have a idea to improve availability, monitor node to check regionserver's
> pid.if this pid not exsits,i think the rs down,i will delete the znode,and
> force close the hlog file.
> so the period maybe 100ms.
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