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https://issues.apache.org/jira/browse/HBASE-5075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13210793#comment-13210793
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zhiyuan.dai commented on HBASE-5075:
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@Lars Hofhansl
I am sorry for that i have reformated the existing code,i will do another patch.
There are two versions of this work.We have implemented version 1 that can't
check machine dying but can check process crashed.The next version will realize
all about it.
thanks for your reply.
> 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: 5075.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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