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From stack <st...@duboce.net>
Subject Re: Optional memstore flush
Date Wed, 23 Sep 2009 20:41:52 GMT
Whats the option name Clint? I just checked out 0.19.0 and had a look in
hbase-default to try and jog my memory but I'm not sure which setting it is
(was).

To force a flush you could do below in a cron job?

echo "flush 'TABLENAME'" | ./bin/hbase shell

... or variations thereof.

St.Ack


On Wed, Sep 23, 2009 at 1:23 PM, Clint Morgan <cm-public@troove.net> wrote:

> Is there no optional memstore flush anymore? I recall in 0.19 the memcache
> would flush every so-often and you could configure this period (optional
> cache flush interval).
>
> Digging through now, I don't see it in 0.20. Is this mechanism no longer
> supported?
>
> Due to a couple of mixups, our stop cluster, take backup, restart cluster
> mechanism had stopped running for a while. So we were not force-flushing,
> nor generating enough data to flush.
> Then we had a crash and I realized that the on-file stores were missing
> writes from weeks ago. I eventually got the data back from the WAL.
>
> cheers,
> -clint
>

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