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Re: CommitLogSegmentManager verbose debug log


Always interested in helping ! I submitted 2 small patches on 3.11 and trunk

Thank you

On 8 April 2018 at 01:34, Jay Zhuang <jay.zhuang@xxxxxxxxx.invalid> wrote:

>  Make senses to me. Not sure if I should just push a Ninja fix, created
> the ticket anyway: CASSANDRA-14370. Are you interested in creating a quick
> patch for it?
>     On Tuesday, April 3, 2018, 3:06:28 AM PDT, Nicolas Guyomar <
> nicolas.guyomar@xxxxxxxxx> wrote:
>
>  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
> >
>
>