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From "Amit Sela (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9682) Bulk loading fails after ClassLoader is updated on OSGi client
Date Sun, 29 Sep 2013 13:50:23 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13781378#comment-13781378

Amit Sela commented on HBASE-9682:

One way to observe this bug is to add the following methods to Algorithm:
public Configuration createConfiguration() {
        Configuration conf = new Configuration();
        conf.setBoolean("hadoop.native.lib", true);
        return conf;
public Configuration getConfiguration() {
      return this.conf;

Now, running on OSGi client, you can print out the CLs returned by these two methods, they
will return the same CL.
Update the client jar (touch is enough) and after it's updated, call these methods once more
- getConfiguration will return the same CL as before (obsolete) while createConfiguration
will return a different CL, new (valid) one.

Maybe one solution could be using createConfiguration() instead of new Configuration(conf)
in getCodec and losing Algorithm's configuration member ?

> Bulk loading fails after ClassLoader is updated on OSGi client
> --------------------------------------------------------------
>                 Key: HBASE-9682
>                 URL: https://issues.apache.org/jira/browse/HBASE-9682
>             Project: HBase
>          Issue Type: Bug
>          Components: Client, HFile, io
>    Affects Versions: 0.94.2
>            Reporter: Amit Sela
> In an OSGi environment (felix) client, running with a bundled HBase (used bnd tool),
after CL is updated - for instance when updating the client bundle without updating the HBase
bundle, Algorithm class in HBase is a static enum and therefore it's configuration member
still holds on to the old CL. This causes NPE when trying to bulk load using LoadIncrementalHFile.

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