Return-Path: X-Original-To: apmail-cassandra-commits-archive@www.apache.org Delivered-To: apmail-cassandra-commits-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id B1F83101CF for ; Thu, 5 Mar 2015 07:54:59 +0000 (UTC) Received: (qmail 18116 invoked by uid 500); 5 Mar 2015 07:54:38 -0000 Delivered-To: apmail-cassandra-commits-archive@cassandra.apache.org Received: (qmail 18068 invoked by uid 500); 5 Mar 2015 07:54:38 -0000 Mailing-List: contact commits-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@cassandra.apache.org Delivered-To: mailing list commits@cassandra.apache.org Received: (qmail 18056 invoked by uid 99); 5 Mar 2015 07:54:38 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Mar 2015 07:54:38 +0000 Date: Thu, 5 Mar 2015 07:54:38 +0000 (UTC) From: "Marcus Eriksson (JIRA)" To: commits@cassandra.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (CASSANDRA-8904) Compaction pending tasks is 9 but no compaction is running MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/CASSANDRA-8904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14348335#comment-14348335 ] Marcus Eriksson commented on CASSANDRA-8904: -------------------------------------------- sure, +1 > Compaction pending tasks is 9 but no compaction is running > ---------------------------------------------------------- > > Key: CASSANDRA-8904 > URL: https://issues.apache.org/jira/browse/CASSANDRA-8904 > Project: Cassandra > Issue Type: Bug > Components: Core > Environment: Linux 2.6.32-431.5.1.el6.x86_64 #1 SMP Wed Feb 12 00:41:43 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux > java version "1.7.0_71" > Java(TM) SE Runtime Environment (build 1.7.0_71-b14) > Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode) > [cqlsh 3.1.8 | Cassandra 1.2.18 | CQL spec 3.0.5 | Thrift protocol 19.36.2] > Reporter: Zdenek Ott > Assignee: Carl Yeksigian > Priority: Minor > Labels: compaction > Fix For: 2.0.13 > > Attachments: 8904-2.0.txt > > > I have found mismatch of compaction requirement computation in LeveldManifest.java > --- > In getCompactionCandidates() method is used following expression: > double score = (double) SSTableReader.getTotalBytes(remaining) / (double)maxBytesForLevel(i); > And compaction is triggered when score>1.001 > In our situation 671758260447/(10^4*64*1024*1024) = 1.00099 > --- > in getEstimatedTasks() method is used different expression: > estimated[i] = Math.max(0L, SSTableReader.getTotalBytes(sstables) - maxBytesForLevel(i)) / maxSSTableSizeInBytes > In our situation (671758260447-(10^4*64*1024*1024))/(64*1024*1024) = 9.97812 implicitly converted to long is 9 > --- > Here are debug log parts and column family create command: > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,173 LeveledManifest.java (line 384) L0 contains 2 SSTables (24467649 bytes) in Manifest@160946690 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,173 LeveledManifest.java (line 384) L1 contains 10 SSTables (659509359 bytes) in Manifest@160946690 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,173 LeveledManifest.java (line 384) L2 contains 105 SSTables (6670197371 bytes) in Manifest@160946690 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,173 LeveledManifest.java (line 384) L3 contains 1043 SSTables (67139124061 bytes) in Manifest@160946690 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,174 LeveledManifest.java (line 384) L4 contains 10410 SSTables (671758260447 bytes) in Manifest@160946690 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,174 LeveledManifest.java (line 384) L5 contains 75 SSTables (5019585316 bytes) in Manifest@160946690 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,191 LeveledManifest.java (line 346) Compaction score for level 5 is 7.479764991998672E-4 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,196 LeveledManifest.java (line 346) Compaction score for level 4 is 1.0009978122219443 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,197 LeveledManifest.java (line 346) Compaction score for level 3 is 1.0004509100466967 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,197 LeveledManifest.java (line 346) Compaction score for level 2 is 0.9939368622004986 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,197 LeveledManifest.java (line 346) Compaction score for level 1 is 0.9827455267310142 > DEBUG [CompactionExecutor:1695] 2015-03-04 10:31:46,197 LeveledManifest.java (line 346) Compaction score for level 0 is 0.0883796289563179 > DEBUG [RMI TCP Connection(3047)-77.234.40.29] 2015-03-04 10:32:18,093 LeveledManifest.java (line 670) Estimating [0, 0, 0, 0, 9, 0, 0, 0, 0] compactions to do for fr.sha > CREATE TABLE sha ( > "KEY" blob, > column1 blob, > value blob, > PRIMARY KEY ("KEY", column1) > ) WITH COMPACT STORAGE AND > bloom_filter_fp_chance=0.100000 AND > caching='NONE' AND > comment='' AND > dclocal_read_repair_chance=0.000000 AND > gc_grace_seconds=172800 AND > read_repair_chance=0.000000 AND > replicate_on_write='true' AND > populate_io_cache_on_flush='false' AND > compaction={'sstable_size_in_mb': '64', 'class': 'LeveledCompactionStrategy'} AND > compression={}; 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