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From: Roland Gude <roland.gude@yoochoose.com>
To: "user@cassandra.apache.org" <user@cassandra.apache.org>
Date: Tue, 19 Apr 2011 06:01:54 -0700
Subject: AW: AW: Two versions of schema
Thread-Topic: AW: Two versions of schema
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Yeah it happens from time to time even if everything seems to be fine that =
schema changes don't work correctly. But it's always repairable with the de=
scribed procedure. Therefore the operator being available is a must have I =
think.

Drain is a nodetool command. The node flushes data and stops accepting new =
writes. This just speeds up bringing the node back up again in this case. P=
robably a flush is equally acceptable.

-----Urspr=FCngliche Nachricht-----
Von: mcasandra [mailto:mohitanchlia@gmail.com]=20
Gesendet: Montag, 18. April 2011 18:27
An: cassandra-user@incubator.apache.org
Betreff: Re: AW: Two versions of schema

In my case all hosts were reachable and I ran nodetool ring before running
the schema update. I don't think it was because of node being down. I tihnk
for some reason it just took over 10 secs because I was reducing key_cache
from 1M to 1000. I think it might be taking long to trim the keys hence 10
sec default may not be the right way.

What is drain?

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