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Date: Sat, 7 May 2011 00:09:05 +0000 (UTC)
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Subject: [jira] [Commented] (HBASE-3860) HLog shouldn't create a new HBC
 when rolling
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    [ https://issues.apache.org/jira/browse/HBASE-3860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030210#comment-13030210 ] 

Hudson commented on HBASE-3860:
-------------------------------

Integrated in HBase-TRUNK #1909 (See [https://builds.apache.org/hudson/job/HBase-TRUNK/1909/])
    

> HLog shouldn't create a new HBC when rolling
> --------------------------------------------
>
>                 Key: HBASE-3860
>                 URL: https://issues.apache.org/jira/browse/HBASE-3860
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.90.2
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>            Priority: Critical
>             Fix For: 0.90.3
>
>
> HBASE-2059 added this change in HLog.rollWriter:
> {code}
> this.writer = createWriter(fs, newPath, new HBaseConfiguration(conf));
> {code}
> Which has since become:
> {code}
> HLog.Writer nextWriter = this.createWriterInstance(fs, newPath,
>   HBaseConfiguration.create(conf));
> {code}
> It's unclear to me why it needs to do that, but it bite us today because we swapped jars under a running hbase with:
> {quote}
> 2011-05-05 12:06:12,876 FATAL org.apache.hadoop.conf.Configuration: error parsing conf file: java.util.zip.ZipException: invalid stored block lengths
> 2011-05-05 12:06:12,877 ERROR org.apache.hadoop.hbase.regionserver.LogRoller: Log rolling failed
> java.lang.RuntimeException: java.util.zip.ZipException: invalid stored block lengths
>         at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1352)
>         at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:1227)
>         at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:1156)
>         at org.apache.hadoop.conf.Configuration.get(Configuration.java:427)
>         at org.apache.hadoop.hbase.HBaseConfiguration.checkDefaultsVersion(HBaseConfiguration.java:63)
>         at org.apache.hadoop.hbase.HBaseConfiguration.addHbaseResources(HBaseConfiguration.java:89)
>         at org.apache.hadoop.hbase.HBaseConfiguration.create(HBaseConfiguration.java:100)
>         at org.apache.hadoop.hbase.HBaseConfiguration.create(HBaseConfiguration.java:110)
>         at org.apache.hadoop.hbase.regionserver.wal.HLog.rollWriter(HLog.java:485)
>         at org.apache.hadoop.hbase.regionserver.LogRoller.run(LogRoller.java:94)
> Caused by: java.util.zip.ZipException: invalid stored block lengths
>         at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:147)
>         at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:105)
>         at java.io.FilterInputStream.read(FilterInputStream.java:66)
>         at com.sun.org.apache.xerces.internal.impl.XMLEntityManager$RewindableInputStream.read(XMLEntityManager.java:2932)
>         at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:704)
>         at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:186)
>         at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:772)
>         at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
>         at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
>         at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:235)
>         at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
>         at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:180)
>         at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1266)
>         ... 9 more
> {quote}

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