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 1ED0F8C4D for ; Thu, 15 Sep 2011 07:29:30 +0000 (UTC) Received: (qmail 50729 invoked by uid 500); 15 Sep 2011 07:29:27 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 50687 invoked by uid 500); 15 Sep 2011 07:29:27 -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 50678 invoked by uid 500); 15 Sep 2011 07:29:27 -0000 Delivered-To: apmail-incubator-cassandra-user@incubator.apache.org Received: (qmail 50674 invoked by uid 99); 15 Sep 2011 07:29:27 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 15 Sep 2011 07:29:27 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of springrider@gmail.com designates 209.85.215.42 as permitted sender) Received: from [209.85.215.42] (HELO mail-ew0-f42.google.com) (209.85.215.42) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 15 Sep 2011 07:29:20 +0000 Received: by ewy2 with SMTP id 2so1586999ewy.1 for ; Thu, 15 Sep 2011 00:29:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; bh=4emOGhzCgjBcjTFMeyjcrivzWIN3RCk4OKLzDqTbLkM=; b=C0E2Aasppz1Sb7Wi7Ck9AlQJcJM3T/mcCO6SvFQIcbVWJjyv1DBeRCFlr5m9xB7wW1 BTojSNrp8VFHAjdgu7dj3w1kykEKa832klVzjRH1o6XhPPwk2R8B5qAogUQylPbOtEgd m70FPexuvSzssSuWtvyngYu/nTRaOM9ghNNfw= Received: by 10.213.108.138 with SMTP id f10mr995396ebp.135.1316071740192; Thu, 15 Sep 2011 00:29:00 -0700 (PDT) MIME-Version: 1.0 Received: by 10.213.32.199 with HTTP; Thu, 15 Sep 2011 00:28:39 -0700 (PDT) From: Yan Chunlu Date: Thu, 15 Sep 2011 15:28:39 +0800 Message-ID: Subject: how did hprof file generated? To: cassandra-user@incubator.apache.org Content-Type: multipart/alternative; boundary=0015174c432c92b78b04acf5d453 X-Virus-Checked: Checked by ClamAV on apache.org --0015174c432c92b78b04acf5d453 Content-Type: text/plain; charset=ISO-8859-1 in one of my node, I found many hprof files in the cassandra installation directory, they are using as much as 200GB disk space. other nodes didn't have those files. turns out that those files are used for memory analyzing, not sure how they are generated? like these: java_pid10626.hprof java_pid13898.hprof java_pid17061.hprof java_pid21002.hprof java_pid23194.hprof java_pid29241.hprof java_pid5013.hprof --0015174c432c92b78b04acf5d453 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable in one of my node, I found many hprof files in the cassandra installation d= irectory, they are using as much as 200GB disk space. =A0other nodes didn&#= 39;t have those files.

turns out that those files are us= ed for memory analyzing, not sure how they are generated?


like these:

jav= a_pid10626.hprof =A0java_pid13898.hprof =A0java_pid17061.hprof =A0java_pid2= 1002.hprof =A0java_pid23194.hprof =A0java_pid29241.hprof =A0java_pid5013.hp= rof


--0015174c432c92b78b04acf5d453--