Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 93699 invoked from network); 4 Aug 2010 08:27:46 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 4 Aug 2010 08:27:46 -0000 Received: (qmail 54368 invoked by uid 500); 4 Aug 2010 08:27:44 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 53509 invoked by uid 500); 4 Aug 2010 08:27:40 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 53493 invoked by uid 99); 4 Aug 2010 08:27:39 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 04 Aug 2010 08:27:39 +0000 X-ASF-Spam-Status: No, hits=2.9 required=10.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (nike.apache.org: local policy) Received: from [209.85.213.44] (HELO mail-yw0-f44.google.com) (209.85.213.44) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 04 Aug 2010 08:27:30 +0000 Received: by ywa8 with SMTP id 8so2210305ywa.31 for ; Wed, 04 Aug 2010 01:27:08 -0700 (PDT) MIME-Version: 1.0 Received: by 10.150.195.11 with SMTP id s11mr8361681ybf.363.1280910428774; Wed, 04 Aug 2010 01:27:08 -0700 (PDT) Received: by 10.151.103.20 with HTTP; Wed, 4 Aug 2010 01:27:08 -0700 (PDT) X-Originating-IP: [80.179.102.198] Date: Wed, 4 Aug 2010 11:27:08 +0300 Message-ID: Subject: Changing schema w/o losing data - Can it be done? From: David Boxenhorn To: Cassandra Mailing List Content-Type: multipart/alternative; boundary=000e0cd4852c18a2ed048cfb334a X-Virus-Checked: Checked by ClamAV on apache.org --000e0cd4852c18a2ed048cfb334a Content-Type: text/plain; charset=ISO-8859-1 When I change schema I need to delete the commit logs - otherwise I get a null pointer exception. Is there a way that I can force Cassandra to empty the commit logs so I won't lose data??? (There has not been much recent activity, nor is there much current activity. There was only one log and it was only 54K.) --000e0cd4852c18a2ed048cfb334a Content-Type: text/html; charset=ISO-8859-1
When I change schema I need to delete the commit logs - otherwise I get a null pointer exception.

Is there a way that I can force Cassandra to empty the commit logs so I won't lose data???

(There has not been much recent activity, nor is there much current activity. There was only one log and it was only 54K.)
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