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From Josh Elser <els...@apache.org>
Subject Re: Region Server does not close FD.
Date Wed, 16 Aug 2017 02:34:28 GMT
Minwoo -- any chance you could share some details about that Hadoop
issue? Something on JIRA?

On Tue, Aug 15, 2017 at 8:11 PM, Kang Minwoo <minwoo.kang@outlook.com> wrote:
> My team member tries to resolve this issue.
> And He found it is a Hadoop Issue.
> He tries to test purging FD.
>
> Best regards,
> Minwoo Kang
>
> ________________________________________
> 보낸 사람: Kang Minwoo <minwoo.kang@outlook.com>
> 보낸 날짜: 2017년 8월 11일 금요일 오전 11:18:58
> 받는 사람: user@hbase.apache.org
> 제목: Region Server does not close FD.
>
> Hello, HBase Users.
>
> These days, My team upgrade HBase Version up to 1.2.6 and test in our product.
> In the meantime, My team improves real machine Fault handling.
>
> My server is JBOD. So My team decided using data node volume failures thresholds in HDFS
Feature.
> My team set an option that is data node volume failures thresholds.
> After that, My team received a call our infra team.
> Because they could not unmount disk because FD was still alive.
>
> So My team tracked FD, and My team found Region Server had that FD.
> I do not know why does Region Server not closed FD.
> (My team use shortcircuit.)
>
> Have you ever experienced the same problem?
>
> My team member created a Jira Issue[1].
>
> Best regards,
> Minwoo Kang
>
> [1]: https://issues.apache.org/jira/browse/HBASE-18454

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