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https://issues.apache.org/jira/browse/HADOOP-10775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14949090#comment-14949090
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Steve Loughran commented on HADOOP-10775:
-----------------------------------------
checkstyle
{code}
./hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Shell.java:675:
First sentence should end with a period.
{code}
common test failure
{code}
org.apache.hadoop.net.TestDNS.testLookupWithoutHostsFallback
java.lang.AssertionError:
Expected: is "-DUMMY_HOSTNAME"
but: was "localhost"
at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
at org.junit.Assert.assertThat(Assert.java:865)
at org.junit.Assert.assertThat(Assert.java:832)
at
org.apache.hadoop.net.TestDNS.testLookupWithoutHostsFallback(TestDNS.java:224)
Standard Output
2015-10-06 21:52:38,228 WARN net.DNS (DNS.java:getHosts(268)) - Unable to
determine hostname for interface lo
2015-10-06 21:52:38,239 WARN net.DNS (DNS.java:getHosts(268)) - Unable to
determine hostname for interface lo
2015-10-06 21:52:38,296 INFO net.TestDNS (TestDNS.java:testRDNS(168)) - Local
revers DNS hostname is asf900.gq1.ygridcore.net
2015-10-06 21:52:38,298 INFO net.TestDNS
(TestDNS.java:testLocalhostResolves(261)) - Localhost IPAddr is
localhost/127.0.0.1
2015-10-06 21:52:38,355 WARN net.DNS (DNS.java:getHosts(268)) - Unable to
determine hostname for interface lo
2015-10-06 21:52:38,403 WARN net.DNS (DNS.java:getHosts(268)) - Unable to
determine hostname for interface lo
{code}
> Shell operations to fail with meaningful errors on windows if winutils.exe
> not found
> ------------------------------------------------------------------------------------
>
> Key: HADOOP-10775
> URL: https://issues.apache.org/jira/browse/HADOOP-10775
> Project: Hadoop Common
> Issue Type: Improvement
> Components: util
> Affects Versions: trunk-win, 2.7.1
> Environment: windows
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Minor
> Attachments: HADOOP-10775-002.patch, HADOOP-10775-003.patch,
> HADOOP-10775-004.patch, HADOOP-10775-005.patch, HADOOP-10775-006.patch,
> HADOOP-10775-007.patch, HADOOP-10775-008.patch, HADOOP-10775.patch
>
>
> If {{winutils.exe}} can't be found {{HADOOP_HOME}} wrong/unset or other
> causes, then an error is logged -but when any of the {{Shell}} operations are
> used, an NPE is raised rather than something meaningful.
> The error message at setup time should be preserved and then raised before
> any attempt to invoke a winutils-driven process made
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