Return-Path: 
 <commits-return-130346-apmail-cassandra-commits-archive=cassandra.apache.org@cassandra.apache.org>
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 F2DA217F1E
	for <apmail-cassandra-commits-archive@www.apache.org>;
 Wed, 29 Apr 2015 17:08:08 +0000 (UTC)
Received: (qmail 87565 invoked by uid 500); 29 Apr 2015 17:08:08 -0000
Delivered-To: apmail-cassandra-commits-archive@cassandra.apache.org
Received: (qmail 87532 invoked by uid 500); 29 Apr 2015 17:08:08 -0000
Mailing-List: contact commits-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:commits-help@cassandra.apache.org>
List-Unsubscribe: <mailto:commits-unsubscribe@cassandra.apache.org>
List-Post: <mailto:commits@cassandra.apache.org>
List-Id: <commits.cassandra.apache.org>
Reply-To: dev@cassandra.apache.org
Delivered-To: mailing list commits@cassandra.apache.org
Received: (qmail 87521 invoked by uid 99); 29 Apr 2015 17:08:08 -0000
Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28)
    by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 29 Apr 2015 17:08:08 +0000
Date: Wed, 29 Apr 2015 17:08:08 +0000 (UTC)
From: "T Jake Luciani (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <JIRA.12788264.1428133809000.23626.1430327288707@Atlassian.JIRA>
In-Reply-To: <JIRA.12788264.1428133809000@Atlassian.JIRA>
References: <JIRA.12788264.1428133809000@Atlassian.JIRA>
 <JIRA.12788264.1428133809018@arcas>
Subject: [jira] [Updated] (CASSANDRA-9120) OutOfMemoryError when read
 auto-saved cache (probably broken)
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-9120?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

T Jake Luciani updated CASSANDRA-9120:
--------------------------------------
    Fix Version/s:     (was: 2.0.15)
                       (was: 3.0)

> OutOfMemoryError when read auto-saved cache (probably broken)
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-9120
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9120
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: Linux
>            Reporter: Vladimir
>             Fix For: 3.x, 2.1.x, 2.0.x
>
>
> Found during tests on a 100 nodes cluster. After restart I found that one node constantly crashes with OutOfMemory Exception. I guess that auto-saved cache was corrupted and Cassandra can't recognize it. I see that similar issues was already fixed (when negative size of some structure was read). Does auto-saved cache have checksum? it'd help to reject corrupted cache at the very beginning.
> As far as I can see current code still have that problem. Stack trace is:
> {code}
> INFO [main] 2015-03-28 01:04:13,503 AutoSavingCache.java (line 114) reading saved cache /storage/core/loginsight/cidata/cassandra/saved_caches/system-sstable_activity-KeyCache-b.db
> ERROR [main] 2015-03-28 01:04:14,718 CassandraDaemon.java (line 513) Exception encountered during startup
> java.lang.OutOfMemoryError: Java heap space
>         at java.util.ArrayList.<init>(Unknown Source)
>         at org.apache.cassandra.db.RowIndexEntry$Serializer.deserialize(RowIndexEntry.java:120)
>         at org.apache.cassandra.service.CacheService$KeyCacheSerializer.deserialize(CacheService.java:365)
>         at org.apache.cassandra.cache.AutoSavingCache.loadSaved(AutoSavingCache.java:119)
>         at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:262)
>         at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:421)
>         at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:392)
>         at org.apache.cassandra.db.Keyspace.initCf(Keyspace.java:315)
>         at org.apache.cassandra.db.Keyspace.<init>(Keyspace.java:272)
>         at org.apache.cassandra.db.Keyspace.open(Keyspace.java:114)
>         at org.apache.cassandra.db.Keyspace.open(Keyspace.java:92)
>         at org.apache.cassandra.db.SystemKeyspace.checkHealth(SystemKeyspace.java:536)
>         at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:261)
>         at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:496)
>         at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:585)
> {code}
> I looked at source code of Cassandra and see:
> http://grepcode.com/file/repo1.maven.org/maven2/org.apache.cassandra/cassandra-all/2.0.10/org/apache/cassandra/db/RowIndexEntry.java
> 119 int entries = in.readInt();
> 120 List<IndexHelper.IndexInfo> columnsIndex = new ArrayList<IndexHelper.IndexInfo>(entries);
> It seems that value entries is invalid (negative) and it tries too allocate an array with huge initial capacity and hits OOM. I have deleted saved_cache directory and was able to start node correctly. We should expect that it may happen in real world. Cassandra should be able to skip incorrect cached data and run.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)