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https://issues.apache.org/jira/browse/HADOOP-14481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16083267#comment-16083267
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Wei-Chiu Chuang commented on HADOOP-14481:
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Hi Steve, sounds like a good idea.
Will post a patch later to do that.
Thanks
> Print stack trace when native bzip2 library does not load
> ---------------------------------------------------------
>
> Key: HADOOP-14481
> URL: https://issues.apache.org/jira/browse/HADOOP-14481
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Minor
> Attachments: HADOOP-14481.001.patch
>
>
> When I ran hadoop checknative on my machine, it was not able to load system
> bzip2 library and printed the following message.
> 17/06/02 09:25:42 WARN bzip2.Bzip2Factory: Failed to load/initialize
> native-bzip2 library system-native, will use pure-Java version
> Reviewing the relevant code, it fails because of an exception. However, that
> exception is not logged. We should print the stacktrace, at least at debug
> log level.
> {code:title=Bzip2Factory#isNativeBzip2Loaded()}
> try {
> // Initialize the native library.
> Bzip2Compressor.initSymbols(libname);
> Bzip2Decompressor.initSymbols(libname);
> nativeBzip2Loaded = true;
> LOG.info("Successfully loaded & initialized native-bzip2 library " +
> libname);
> } catch (Throwable t) {
> LOG.warn("Failed to load/initialize native-bzip2 library " +
> libname + ", will use pure-Java version");
> }
> {code}
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