Return-Path: X-Original-To: apmail-hbase-user-archive@www.apache.org Delivered-To: apmail-hbase-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 531989048 for ; Fri, 16 Dec 2011 21:58:09 +0000 (UTC) Received: (qmail 54391 invoked by uid 500); 16 Dec 2011 21:58:07 -0000 Delivered-To: apmail-hbase-user-archive@hbase.apache.org Received: (qmail 54348 invoked by uid 500); 16 Dec 2011 21:58:07 -0000 Mailing-List: contact user-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hbase.apache.org Delivered-To: mailing list user@hbase.apache.org Received: (qmail 54340 invoked by uid 99); 16 Dec 2011 21:58:07 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 16 Dec 2011 21:58:07 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of homer.strong@gmail.com designates 209.85.210.41 as permitted sender) Received: from [209.85.210.41] (HELO mail-pz0-f41.google.com) (209.85.210.41) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 16 Dec 2011 21:58:00 +0000 Received: by dakl33 with SMTP id l33so3241916dak.14 for ; Fri, 16 Dec 2011 13:57:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=pfyqmwD2NDwwPVV5pHZD9hPIJ30R1TSzjR0/Xg7Bgg4=; b=umiA+fb4kXBQHcndTGAzg80NegoEEh/CWrmfI3sHl8mfLHeWr6YUzMBqRBPuvn2zqR eRhaY1yxp3ehAHXghOI1DFBLBtTeqCh4wCpLnA+hVE2NZdk3xU6inuMrLRZ3EHjiX/PL 2bzC/oaI/s+P2CaCC1Bbm8gbfzhrxWio8t8jQ= MIME-Version: 1.0 Received: by 10.68.75.134 with SMTP id c6mr18534954pbw.116.1324072658811; Fri, 16 Dec 2011 13:57:38 -0800 (PST) Received: by 10.68.51.98 with HTTP; Fri, 16 Dec 2011 13:57:38 -0800 (PST) Date: Fri, 16 Dec 2011 13:57:38 -0800 Message-ID: Subject: RS memory leak? From: Homer Strong To: user@hbase.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org Hi HBasistas, We're experiencing the following behavior when starting our cluster with version 0.90.4-cdh3u2: Whenever a RS is assigned a large (> 500-600) number of regions, the heap usage grows without bound. Then the RS constantly GCs and must be killed. This is with 2000 regions over 3 RSs, with 10 GB heap. RSs have EC2 xlarges. Master is on its own large. Datanodes and namenodes are adjacent to RSs and master, respectively. Looks like a memory leak? Any suggestions would be appreciated. Thanks, Homer