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Re: CommitLogSegmentManager verbose debug log


Hi Jay,

Well the log in itself does not provide useful information (like segment
number or sthg like that), so IMHO trace would be a better level for this
one

I agree that one log per sec may not be seen that verbose !

Thank you

On 30 March 2018 at 06:36, Jay Zhuang <jay.zhuang@xxxxxxxxx> wrote:

> It's changed to trace() in cassandra-3.0 with CASSANDRA-10241:
> https://github.com/pauloricardomg/cassandra/commit/
> 3ef1b18fa76dce7cd65b73977fc30e51301f3fed#diff-
> d07279710c482983e537aed26df80400
>
> In cassandra-3.11 (and trunk), it's changed back to debug() with
> CASSANDRA-10202:
> https://github.com/apache/cassandra/commit/e8907c16abcd84021a39cdaac79b60
> 9fcc64a43c#diff-85e13493c70723764c539dd222455979
>
> The message is logged when a new commit-log is created, so it's not that
> verbose from my point of view. But I'm also fine to change it back to trace.
>
> Here is a sample of debug.log while running cassandra-stress:
> https://gist.githubusercontent.com/cooldoger/
> 12f507da9b41b232d8869bbcd2bfd02b/raw/241cd8f0639269966aa53e2b10cee6
> 13f8ed8cfe/gistfile1.txt
>
>
>
> On Thursday, March 29, 2018, 8:47:54 AM PDT, Nicolas Guyomar <
> nicolas.guyomar@xxxxxxxxx> wrote:
>
>
> Hi guys,
>
> I'm trying to understand the meaning of the following log
> in org.apache.cassandra.db.commitlog.CommitLogSegmentManager.java
>
> logger.debug("No segments in reserve; creating a fresh one");
>
> I feel like it could be remove, as it seems to be kind of a continuous task
> of providing segment
>
> Any thought on removing this log ? (my debug.log is quite full of it)
>
> Thank you
>
> Nicolas
>