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https://issues.apache.org/jira/browse/HADOOP-16167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Templeton updated HADOOP-16167:
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Attachment: HADOOP-16167.002.patch
> "hadoop CLASSFILE" prints error messages on Ubuntu 18
> -----------------------------------------------------
>
> Key: HADOOP-16167
> URL: https://issues.apache.org/jira/browse/HADOOP-16167
> Project: Hadoop Common
> Issue Type: Improvement
> Components: scripts
> Affects Versions: 3.2.0
> Reporter: Daniel Templeton
> Assignee: Daniel Templeton
> Priority: Major
> Attachments: HADOOP-16167.001.patch, HADOOP-16167.002.patch,
> HADOOP-16167.003.patch
>
>
> {noformat}
> # hadoop org.apache.hadoop.conf.Configuration
> /usr/lib/hadoop/bin/../lib/hadoop/libexec//hadoop-functions.sh: line 2366:
> HADOOP_ORG.APACHE.HADOOP.CONF.CONFIGURATION_USER: bad substitution
> /usr/lib/hadoop/bin/../lib/hadoop/libexec//hadoop-functions.sh: line 2331:
> HADOOP_ORG.APACHE.HADOOP.CONF.CONFIGURATION_USER: bad substitution
> /usr/lib/hadoop/bin/../lib/hadoop/libexec//hadoop-functions.sh: line 2426:
> HADOOP_ORG.APACHE.HADOOP.CONF.CONFIGURATION_OPTS: bad substitution
> {noformat}
> The issue is a regression in bash 4.4. See
> [here|http://savannah.gnu.org/support/?109649]. The extraneous output can
> break scripts that read the command output.
> According to [~aw]:
> {quote}Oh, I think I see the bug. HADOOP_SUBCMD (and equivalents in yarn,
> hdfs, etc) just needs some special handling when a custom method is being
> called. For example, there’s no point in checking to see if it should run
> with privileges, so just skip over that. Probably a few other places too.
> Relatively easy fix. 2 lines of code, maybe.{quote}
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