is.
Now we have reduced the young gen size and to see if NN is stable enough then,
:).
Thanks
Yiqun
-邮件原件-
发件人: Brahma Reddy Battula [mailto:brahmareddy.batt...@huawei.com]
发送时间: 2018年9月27日 22:49
收件人: 林意群[运营中心]; Wei-Chiu Chuang
抄送: Hdfs-dev
主题: RE: NN run progressively slower
Looks you are
ra's which are fixed later to
2.6.0) like decommission nodes,...
v) Any recursive calls are very frequently?
-Original Message-
From: Lin,Yiqun(vip.com) [mailto:yiqun01@vipshop.com]
Sent: Wednesday, September 26, 2018 10:26 AM
To: Wei-Chiu Chuang
Cc: Hdfs-dev
Subject: 答复: NN run progressiv
ime frame. We have customers at/beyond your scale in your version but
>I don't think I've heard similar symptoms.
Thanks for sharing this.
Thanks
Yiqun
发件人: Wei-Chiu Chuang [mailto:weic...@cloudera.com]
发送时间: 2018年9月26日 11:14
收件人: 林意群[运营中心]
抄送: Hdfs-dev
主题: Re: NN run progressively slower
Y
Yiqun,
Is this related to HDFS-9260?
Note that HDFS-9260 was backported since CDH5.7 and above.
I'm interested to learn more. Did you observe clients failing to close file
due to insufficient number of block replicas? Did NN fail over?
Did you have gc logging enabled? Any chance to take a heap
9月26日 1:11
收件人: 林意群[运营中心]
抄送: Hdfs-dev
主题: Re: NN run progressively slower
Are you using CMS? How big is young gen?
How often does the NN do young gen collection when it is slow?
On Tue, Sep 25, 2018 at 4:04 AM Lin,Yiqun(vip.com<http://vip.com>)
mailto:yiqun01@vipshop.com>> wr
Are you using CMS? How big is young gen?
How often does the NN do young gen collection when it is slow?
On Tue, Sep 25, 2018 at 4:04 AM Lin,Yiqun(vip.com)
wrote:
> Hi hdfs developers:
>
> We meet a bad problem after rolling upgrade our hadoop version from
> 2.5.0-cdh5.3.2 to 2.6.0-cdh5.13.1.
Hi hdfs developers:
We meet a bad problem after rolling upgrade our hadoop version from
2.5.0-cdh5.3.2 to 2.6.0-cdh5.13.1. The problem is that we find NN running slow
periodically (around a week). Concretely to say, For example, we startup NN on
Monday, it will run fast. But time coming to
