Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id CED4E6E62 for ; Thu, 21 Jul 2011 08:14:58 +0000 (UTC) Received: (qmail 33016 invoked by uid 500); 21 Jul 2011 08:14:56 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 32753 invoked by uid 500); 21 Jul 2011 08:14:48 -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 32740 invoked by uid 99); 21 Jul 2011 08:14:45 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 21 Jul 2011 08:14:45 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,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; Thu, 21 Jul 2011 08:14:37 +0000 Received: by ywp31 with SMTP id 31so586244ywp.31 for ; Thu, 21 Jul 2011 01:14:16 -0700 (PDT) MIME-Version: 1.0 Received: by 10.151.87.1 with SMTP id p1mr345794ybl.50.1311236056375; Thu, 21 Jul 2011 01:14:16 -0700 (PDT) Received: by 10.150.148.20 with HTTP; Thu, 21 Jul 2011 01:14:16 -0700 (PDT) X-Originating-IP: [115.241.186.39] In-Reply-To: References: Date: Thu, 21 Jul 2011 13:44:16 +0530 Message-ID: Subject: Re: Memtables stored in which location From: samal To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=000e0cd34c065b62b904a88fefc3 X-Virus-Checked: Checked by ClamAV on apache.org --000e0cd34c065b62b904a88fefc3 Content-Type: text/plain; charset=ISO-8859-1 SSTable is stored on disk not memtable. Memtable is memory representation of data, which is on flush to create SSTable on disk. This is the location where SSTable is stored https://github.com/apache/cassandra/blob/trunk/conf/cassandra.yaml#L71 Where as Commitlog which is back up (log) for memtable replaying store in https://github.com/apache/cassandra/blob/trunk/conf/cassandra.yaml#L75 location. Once the all memtable is flushed to disk, new commit log segment is created. On Thu, Jul 21, 2011 at 1:12 PM, Abdul Haq Shaik < abdulsk.cassandra@gmail.com> wrote: > Hi, > > Can you please let me know where exactly the memtables are getting stored. > I wanted to know the physical location > --000e0cd34c065b62b904a88fefc3 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable SSTable is stored on disk not memtable.

Memtable is memory rep= resentation of data, which is on flush to create SSTable on disk.

This is the location where SSTable is stored
location.

Once the all memtable is flushed to= disk, new commit log segment is created.

On Thu, Jul 21, 2011 at 1:12 PM, Abdul Haq Shaik = <abdulsk.cassandra@gmail.= com> wrote:
Hi,

Can you please let m= e know where exactly the memtables are getting stored. I wanted to know the= physical location

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