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From Casey Deccio <ca...@deccio.net>
Subject Re: can't find rows
Date Wed, 29 Feb 2012 13:29:53 GMT
On Wed, Feb 29, 2012 at 5:25 AM, Casey Deccio <casey@deccio.net> wrote:

> I recently had to do some shuffling with one of my cassandra nodes because
> it was running out of disk space.  I did a few things in the process, and
> I'm not sure in the end which caused my problem.  First I added a second
> file path to the data directory in cassandra.yaml.  Things still worked
> fine after this, as far as I could tell.  Shortly after this, however, I
> took down the node and rsync'd the data from both data directories, as well
> as commitlogs, to an external drive.  I then shut down the machine,
> replaced the hard drives with bigger drives, and re-installed the OS.  I
> re-created the data directories, rsync'd the data and commitlogs back over
> from the external drive, and started up cassandra, re-adding it to the
> ring.  When it came up, all of my rows were missing for one columnfamily
> and nearly all my rows were missing for another--or at least that's what it
> looks like, based on walking the rows.  I tried scrubbing each of the
> nodes.  One of them had insufficient disk space (yes, this seems to be a
> recurring problem) for scrub, so I did upgradesstables instead, and that
> one is still in progress.  So far the scrub/upgradesstables hasn't seemed
> to help.  But in the log messages created during scrub/upgradesstables it
> shows realistic numbers (i.e., in terms of the rows that existed before
> this ordeal) created in each new sstable.  Also, the loads shown when I run
> nodetool ring still reflects the numbers with the complete set of rows.
> That's encouraging, but I can't seem to access these phantom rows.  Please
> help!
>
>
I neglected to mention that I'm running cassandra 1.0.7.

Thanks,
Casey

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