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https://issues.apache.org/jira/browse/HADOOP-13684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16219135#comment-16219135
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Xiao Chen commented on HADOOP-13684:
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Thanks [[email protected]].
[~jojochuang] could you provide more details?
I recall Wei-Chiu verified this internally with an escalation, where a
confusing error message was seen.
{quote}. Wei-Chiu Chuang added a comment - Aug/29/17 08:32 AM
HADOOP-13684 did not fix a bug. It simply corrects an incorrect log message
more precise.
{quote}
Looking at HADOOP-14981 and this one, one possible fix could be moving the
{{isNativeCodeLoaded}} check before {{buildSupportsSnappy}}.
> Snappy may complain Hadoop is built without snappy if libhadoop is not found.
> -----------------------------------------------------------------------------
>
> Key: HADOOP-13684
> URL: https://issues.apache.org/jira/browse/HADOOP-13684
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Minor
> Labels: supportability
> Fix For: 2.8.0, 3.0.0-alpha2
>
> Attachments: HADOOP-13684.001.patch, HADOOP-13684.002.patch
>
>
> If for some reason libhadoop can not be found/loaded, Snappy complains Hadoop
> is not built with Snappy but it actually is.
> {code:title=SnappyCodec.java}
> public static void checkNativeCodeLoaded() {
> if (!NativeCodeLoader.isNativeCodeLoaded() ||
> !NativeCodeLoader.buildSupportsSnappy()) {
> throw new RuntimeException("native snappy library not available: " +
> "this version of libhadoop was built without " +
> "snappy support.");
> }
> {code}
> This case may happen with MAPREDUCE-6577.
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