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Posted to issues@hbase.apache.org by "Yu Li (JIRA)" <ji...@apache.org> on 2012/11/12 10:12:12 UTC

[jira] [Created] (HBASE-7145) ReusableStreamGzipCodec NPE upon reset with IBM JDK

Yu Li created HBASE-7145:
----------------------------

             Summary: ReusableStreamGzipCodec NPE upon reset with IBM JDK
                 Key: HBASE-7145
                 URL: https://issues.apache.org/jira/browse/HBASE-7145
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.94.0
            Reporter: Yu Li


This is the same issue as described in HADOOP-8419, repeat the issue description here:

The ReusableStreamGzipCodec will NPE upon reset after finish when the native zlib codec is not loaded. When the native zlib is loaded the codec creates a CompressorOutputStream that doesn't have the problem, otherwise, the ReusableStreamGzipCodec uses GZIPOutputStream which is extended to provide the resetState method. Since IBM JDK 6 SR9 FP2 including the current JDK 6 SR10, GZIPOutputStream#finish will release the underlying deflater(calls the deflater's end method), which causes NPE upon reset. This seems to be an IBM JDK quirk as Sun JDK and OpenJDK doesn't have this issue.

Since in HBASE-5387 HBase source has refactor its code not to use hadoop's GzipCodec during real compress/decompress, it's necessary to make a separate patch for HBase on the same issue

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[jira] [Updated] (HBASE-7145) ReusableStreamGzipCodec NPE upon reset with IBM JDK

Posted by "Andrew Purtell (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-7145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell updated HBASE-7145:
----------------------------------

    Issue Type: Sub-task  (was: Bug)
        Parent: HBASE-7149
    
> ReusableStreamGzipCodec NPE upon reset with IBM JDK
> ---------------------------------------------------
>
>                 Key: HBASE-7145
>                 URL: https://issues.apache.org/jira/browse/HBASE-7145
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 0.94.0
>            Reporter: Yu Li
>              Labels: gzip, ibm-jdk
>
> This is the same issue as described in HADOOP-8419, repeat the issue description here:
> The ReusableStreamGzipCodec will NPE upon reset after finish when the native zlib codec is not loaded. When the native zlib is loaded the codec creates a CompressorOutputStream that doesn't have the problem, otherwise, the ReusableStreamGzipCodec uses GZIPOutputStream which is extended to provide the resetState method. Since IBM JDK 6 SR9 FP2 including the current JDK 6 SR10, GZIPOutputStream#finish will release the underlying deflater(calls the deflater's end method), which causes NPE upon reset. This seems to be an IBM JDK quirk as Sun JDK and OpenJDK doesn't have this issue.
> Since in HBASE-5387 HBase source has refactor its code not to use hadoop's GzipCodec during real compress/decompress, it's necessary to make a separate patch for HBase on the same issue

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[jira] [Updated] (HBASE-7145) ReusableStreamGzipCodec NPE upon reset with IBM JDK

Posted by "Yu Li (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-7145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yu Li updated HBASE-7145:
-------------------------

    Assignee: Yu Li
    
> ReusableStreamGzipCodec NPE upon reset with IBM JDK
> ---------------------------------------------------
>
>                 Key: HBASE-7145
>                 URL: https://issues.apache.org/jira/browse/HBASE-7145
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 0.94.0
>            Reporter: Yu Li
>            Assignee: Yu Li
>              Labels: gzip, ibm-jdk
>
> This is the same issue as described in HADOOP-8419, repeat the issue description here:
> The ReusableStreamGzipCodec will NPE upon reset after finish when the native zlib codec is not loaded. When the native zlib is loaded the codec creates a CompressorOutputStream that doesn't have the problem, otherwise, the ReusableStreamGzipCodec uses GZIPOutputStream which is extended to provide the resetState method. Since IBM JDK 6 SR9 FP2 including the current JDK 6 SR10, GZIPOutputStream#finish will release the underlying deflater(calls the deflater's end method), which causes NPE upon reset. This seems to be an IBM JDK quirk as Sun JDK and OpenJDK doesn't have this issue.
> Since in HBASE-5387 HBase source has refactor its code not to use hadoop's GzipCodec during real compress/decompress, it's necessary to make a separate patch for HBase on the same issue

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