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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9162) Add utility to check native library availability
Date Fri, 21 Dec 2012 21:51:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13538449#comment-13538449

Suresh Srinivas commented on HADOOP-9162:

Minor Comments:
# Please add annotation to NativeLibraryChecker - InterfaceAudience.Private
# Please add description of -a to the usage.
# Do you think it is a good idea to have checknative [hadoop|zlib|snappy|lz4] and absence
of specific option prints for all? I am okay without this change, if you choose not to make
this change.

> Add utility to check native library availability
> ------------------------------------------------
>                 Key: HADOOP-9162
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9162
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: native
>    Affects Versions: 3.0.0, 2.0.3-alpha
>            Reporter: Binglin Chang
>            Assignee: Binglin Chang
>            Priority: Minor
>         Attachments: HADOOP-9162.patch, HADOOP-9162.v2.patch, HADOOP-9162.v3.patch
> Many times, after deploy hadoop or when trouble shooting, we need to check whether native
library(along with native compression libraries) can work properly, and I just want to use
one command to check that, like this:
> hadoop org.apache.hadoop.util.NativeCodeLoader
> and it shows:
> Native library loading test:
> hadoop: false
> zlib:   false
> snappy: false
> lz4:    false

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