hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ted Yu <yuzhih...@gmail.com>
Subject Re: taking snapshot's creates to many TCP CLOSE_WAIT handles on the hbase master server
Date Thu, 17 Apr 2014 17:09:57 GMT
Can you take jstack of master process and pastebin it ?


On Thu, Apr 17, 2014 at 6:51 AM, Hansi Klose <hansi.klose@web.de> wrote:

> Hi,
> we use a script to take on a regular basis snapshot's and delete old one's.
> We recognizes that the web interface of the hbase master was not working
> any more becaues of too many open files.
> The master reaches his number of open file limit of 32768
> When I run lsof I saw that there where a lot of TCP CLOSE_WAIT handles open
> with the regionserver as target.
> On the regionserver there is just one connection to the hbase master.
> I can see that the count of the CLOSE_WAIT handles grow each time
> i take a snapshot. When i delete on nothing changes.
> Each time i take a snapshot  there are 20 - 30 new CLOSE_WAIT handles.
> Why does the master do not close the handles? Is there a parameter
> with a timeout we can use?
> We use hbase 0.94.2-cdh4.2.0.
> Regards Hansi

  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message