cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Branton Davis <branton.da...@spanning.com>
Subject Re: Too many open files Cassandra 2.1.11.872
Date Fri, 06 Nov 2015 18:56:13 GMT
We recently went down the rabbit hole of trying to understand the output of
lsof.  lsof -n has a lot of duplicates (files opened by multiple threads).
Use 'lsof -p $PID' or 'lsof -u cassandra' instead.

On Fri, Nov 6, 2015 at 12:49 PM, Bryan Cheng <bryan@blockcypher.com> wrote:

> Is your compaction progressing as expected? If not, this may cause an
> excessive number of tiny db files. Had a node refuse to start recently
> because of this, had to temporarily remove limits on that process.
>
> On Fri, Nov 6, 2015 at 10:09 AM, Jason Lewis <jlewis@packetnexus.com>
> wrote:
>
>> I'm getting too many open files errors and I'm wondering what the
>> cause may be.
>>
>> lsof -n | grep java  show 1.4M files
>>
>> ~90k are inodes
>> ~70k are pipes
>> ~500k are cassandra services in /usr
>> ~700K are the data files.
>>
>> What might be causing so many files to be open?
>>
>> jas
>>
>
>

Mime
View raw message