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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-14481) Print stack trace when native bzip2 library does not load
Date Fri, 02 Jun 2017 18:39:04 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-14481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wei-Chiu Chuang updated HADOOP-14481:
-------------------------------------
    Status: Patch Available  (was: Open)

> 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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