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From Igor Katkov <ikat...@gmail.com>
Subject Re: commit logs are not deleted
Date Sun, 27 Sep 2009 16:18:30 GMT
There is no log lines with "column family 1"
There are only "column family 0"

On Sun, Sep 27, 2009 at 12:02 PM, Jonathan Ellis <jbellis@gmail.com> wrote:

> we're looking for "column family 1"
>
> On Sun, Sep 27, 2009 at 10:39 AM, Igor Katkov <ikatkov@gmail.com> wrote:
> > yes, long enough.
> > here is a typical log line from CommitLog.java
> >
> > DEBUG [COMMIT-LOG-WRITER] 2009-09-27 11:12:38,646 CommitLog.java (line
> 469)
> > discard completed log segments for
> >
> CommitLogContext(file='c:/cassandra-4rc/data/commitlog\CommitLog-1254064318865.log',
> > position=67321599), column family 0. CFIDs are BenchMarkApp:
> > TableMetadata(Channels: 0, }), system: TableMetadata(LocationInfo: 1,
> > HintsColumnFamily: 2, }), }
> >
> >
> > On Sun, Sep 27, 2009 at 8:49 AM, Jonathan Ellis <jbellis@gmail.com>
> wrote:
> >>
> >> Did you let it run long enough to flush the LocationInfo CF?  Should
> >> try every 5 minutes.
> >>
> >> On Sun, Sep 27, 2009 at 12:03 AM, Igor Katkov <ikatkov@gmail.com>
> wrote:
> >> > I applied the patch, logs segments are still not deleted
> >> > but at least with this extra logging I found something - it says "Not
> >> > safe
> >> > to delete commit log
> >> > c:/cassandra-4rc/data/commitlog\CommitLog-1254027292143.log; dirty is
> 1"
> >> > please see log snippet below, I grepped all lines that contain
> >> > "1254027292143"
> >> > full log 1Mb zipped is here
> >> > http://www.katkovonline.com/cassandra-log.zip
> >> >
> >> >
> >> > DEBUG [COMMIT-LOG-WRITER] 2009-09-27 00:54:54,817 CommitLog.java (line
> >> > 469)
> >> > discard completed log segments for
> >> >
> >> >
> CommitLogContext(file='c:/cassandra-4rc/data/commitlog\CommitLog-1254027292143.log',
> >> > position=708751), column family 0. CFIDs are BenchMarkApp:
> >> > TableMetadata(Channels: 0, }), system: TableMetadata(LocationInfo: 1,
> >> > HintsColumnFamily: 2, }), }
> >> > DEBUG [COMMIT-LOG-WRITER] 2009-09-27 00:54:54,817 CommitLog.java (line
> >> > 520)
> >> > Marking replay position on current commit log
> >> > c:/cassandra-4rc/data/commitlog\CommitLog-1254027292143.log
> >> > DEBUG [COMMIT-LOG-WRITER] 2009-09-27 00:54:58,680 CommitLog.java (line
> >> > 469)
> >> > discard completed log segments for
> >> >
> >> >
> CommitLogContext(file='c:/cassandra-4rc/data/commitlog\CommitLog-1254027292143.log',
> >> > position=68030159), column family 0. CFIDs are BenchMarkApp:
> >> > TableMetadata(Channels: 0, }), system: TableMetadata(LocationInfo: 1,
> >> > HintsColumnFamily: 2, }), }
> >> > DEBUG [COMMIT-LOG-WRITER] 2009-09-27 00:54:58,680 CommitLog.java (line
> >> > 520)
> >> > Marking replay position on current commit log
> >> > c:/cassandra-4rc/data/commitlog\CommitLog-1254027292143.log
> >> > DEBUG [COMMIT-LOG-WRITER] 2009-09-27 00:55:01,120 CommitLog.java (line
> >> > 540)
> >> > Not safe to delete commit log
> >> > c:/cassandra-4rc/data/commitlog\CommitLog-1254027292143.log; dirty is
> 1,
> >> > DEBUG [COMMIT-LOG-WRITER] 2009-09-27 00:55:02,715 CommitLog.java (line
> >> > 540)
> >> > Not safe to delete commit log
> >> > c:/cassandra-4rc/data/commitlog\CommitLog-1254027292143.log; dirty is
> 1,
> >> > DEBUG [COMMIT-LOG-WRITER] 2009-09-27 00:55:05,030 CommitLog.java (line
> >> > 540)
> >> > Not safe to delete commit log
> >> > c:/cassandra-4rc/data/commitlog\CommitLog-1254027292143.log; dirty is
> 1,
> >> > ...
> >> >
> >> >
> >> > P.S.
> >> > OS: Windows server 2003
> >> >
> >> > On Sat, Sep 26, 2009 at 2:50 PM, Jonathan Ellis <jbellis@gmail.com>
> >> > wrote:
> >> >>
> >> >> Patch 0001 on https://issues.apache.org/jira/browse/CASSANDRA-459
> >> >> fixes another bug that could cause this.
> >> >>
> >> >> On Fri, Sep 25, 2009 at 11:55 PM, Igor Katkov <ikatkov@gmail.com>
> >> >> wrote:
> >> >> > I checked out and built 0.4 branch. It's all the same, files stays.
> >> >> > I also noticed a side effect - as number of commit log segments
is
> >> >> > growing, server response time is also growing.
> >> >> > I assume this is because Cassandra now has to read through some
> these
> >> >> > files on reach read/write request
> >> >> >
> >> >> >
> >> >> > On Fri, Sep 25, 2009 at 4:53 PM, Jonathan Ellis <jbellis@gmail.com
> >
> >> >> > wrote:
> >> >> >> This is fixed on the 0.4 branch (but not in trunk, yet)
> >> >> >>
> >> >> >> On Fri, Sep 25, 2009 at 1:57 PM, Jonathan Ellis <
> jbellis@gmail.com>
> >> >> >> wrote:
> >> >> >>> https://issues.apache.org/jira/browse/CASSANDRA-455 will
address
> >> >> >>> FlushPeriod not working.
> >> >> >>>
> >> >> >>> On Fri, Sep 25, 2009 at 1:33 PM, Igor Katkov <ikatkov@gmail.com>
> >> >> >>> wrote:
> >> >> >>>> I tried latest stable version 0.3 and commit logs
segments are
> in
> >> >> >>>> fact deleted.
> >> >> >>>> Tried it again on 0.4 set  periodic flush to 1min
> >> >> >>>> (FlushPeriodInMinutes="1") => it's all the same,
files remains
> >> >> >>>> there
> >> >> >>>> forever.
> >> >> >>>>
> >> >> >>>> I also noticed that there are other implicit CFs,
can these
> >> >> >>>> prevent
> >> >> >>>> logs from being deleted?
> >> >> >>>> DEBUG - adding Channels as 0
> >> >> >>>> DEBUG - adding LocationInfo as 1
> >> >> >>>> DEBUG - adding HintsColumnFamily as 2
> >> >> >>>>
> >> >> >>>> On Thu, Sep 24, 2009 at 11:07 PM, Igor Katkov <
> ikatkov@gmail.com>
> >> >> >>>> wrote:
> >> >> >>>>> in my case commit log segments are never deleted
(unless I
> >> >> >>>>> restart
> >> >> >>>>> the server)
> >> >> >>>>> so they grow and grow and eventually hosts is
running out of
> >> >> >>>>> space.
> >> >> >>>>>
> >> >> >>>>> Any ideas how to fix it?
> >> >
> >> >
> >
> >
>

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