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 EC74C18731 for ; Wed, 1 Jul 2015 14:03:36 +0000 (UTC) Received: (qmail 95153 invoked by uid 500); 1 Jul 2015 14:03:34 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 95116 invoked by uid 500); 1 Jul 2015 14:03:34 -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 95106 invoked by uid 99); 1 Jul 2015 14:03:34 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 01 Jul 2015 14:03:34 +0000 X-ASF-Spam-Status: No, hits=-0.5 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of pandian912@gmail.com designates 209.85.220.172 as permitted sender) Received: from [209.85.220.172] (HELO mail-qk0-f172.google.com) (209.85.220.172) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 01 Jul 2015 14:01:19 +0000 Received: by qkhu186 with SMTP id u186so29884281qkh.0 for ; Wed, 01 Jul 2015 07:03:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to:content-type; bh=4I0U46WkhRGu8Hkvzvzm7XLtf0CTYeX/Nwy3BetZ2nA=; b=XtIJFQaLTmGsPxJEM1AXsRkwRCwKbco7cVkzgQyw0RHa3M/5aBii3wUw+9Cbzck0Pi YRvk6lO/1qRluvKwo3ee2WZuoie7bEo6MGP+XxECV2fl47yTZ57GQymnx+rvcnDTWUdc sE4NIW+2qzJgBuQ9MLNsClqvB/TC2j3hZ+QAV5WRPQvXXb0C6sDavyR4Q88ggjb/29Qc oLgmpgJqOuHmWa1mdc661vgs6ocDzRk+Y0GDMSK5RyJrsXSsmUp/zCvYeySj4twwMd1Y etwnzmfALPgFiFqage9OdHP9c6dbooMT/QiDuqjGlQIMDsH/HFaVYu8PfaOMkk4Oa6Io +29w== X-Received: by 10.140.148.144 with SMTP id 138mr34515260qhu.60.1435759386273; Wed, 01 Jul 2015 07:03:06 -0700 (PDT) MIME-Version: 1.0 Received: by 10.140.94.42 with HTTP; Wed, 1 Jul 2015 07:02:46 -0700 (PDT) From: Jayapandian Ponraj Date: Wed, 1 Jul 2015 19:32:46 +0530 Message-ID: Subject: High load on cassandra node To: user@cassandra.apache.org Content-Type: text/plain; charset=UTF-8 X-Virus-Checked: Checked by ClamAV on apache.org HI I have a 6 node cluster and I ran a major compaction on node 1 but I found that the load reached very high levels on node 2. Is this explainable? Attaching tpstats and metrics: cassandra-2 ~]$ nodetool tpstats Pool Name Active Pending Completed Blocked All time blocked MutationStage 0 0 185152938 0 0 ReadStage 0 0 1111490 0 0 RequestResponseStage 0 0 168660091 0 0 ReadRepairStage 0 0 21247 0 0 ReplicateOnWriteStage 32 6186 88699535 0 7163 MiscStage 0 0 0 0 0 HintedHandoff 0 1 1090 0 0 FlushWriter 0 0 2059 0 13 MemoryMeter 0 0 3922 0 0 GossipStage 0 0 2246873 0 0 CacheCleanupExecutor 0 0 0 0 0 InternalResponseStage 0 0 0 0 0 CompactionExecutor 0 0 12353 0 0 ValidationExecutor 0 0 0 0 0 MigrationStage 0 0 1 0 0 commitlog_archiver 0 0 0 0 0 AntiEntropyStage 0 0 0 0 0 PendingRangeCalculator 0 0 16 0 0 MemtablePostFlusher 0 0 10932 0 0 Message type Dropped READ 49051 RANGE_SLICE 0 _TRACE 0 MUTATION 269 COUNTER_MUTATION 185 BINARY 0 REQUEST_RESPONSE 0 PAGED_RANGE 0 READ_REPAIR 0 Also I saw that the nativetransportreqests was 23 in active and 23 in pending, I found this in opscenter. Any settings i can make to keep the load under control? Appreciate any help.. Thanks