[HADOOP-11460] Deprecate shell vars

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 3.0.0-alpha1
• Component/s: scripts
• Labels: scripts shell

Release Note

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| Old | New |
|:---- |:---- |
| HADOOP\_HDFS\_LOG\_DIR | HADOOP\_LOG\_DIR |
| HADOOP\_HDFS\_LOGFILE | HADOOP\_LOGFILE |
| HADOOP\_HDFS\_NICENESS | HADOOP\_NICENESS |
| HADOOP\_HDFS\_STOP\_TIMEOUT | HADOOP\_STOP\_TIMEOUT |
| HADOOP\_HDFS\_PID\_DIR | HADOOP\_PID\_DIR |
| HADOOP\_HDFS\_ROOT\_LOGGER | HADOOP\_ROOT\_LOGGER |
| HADOOP\_HDFS\_IDENT\_STRING | HADOOP\_IDENT\_STRING |
| HADOOP\_MAPRED\_LOG\_DIR | HADOOP\_LOG\_DIR |
| HADOOP\_MAPRED\_LOGFILE | HADOOP\_LOGFILE |
| HADOOP\_MAPRED\_NICENESS | HADOOP\_NICENESS |
| HADOOP\_MAPRED\_STOP\_TIMEOUT | HADOOP\_STOP\_TIMEOUT |
| HADOOP\_MAPRED\_PID\_DIR | HADOOP\_PID\_DIR |
| HADOOP\_MAPRED\_ROOT\_LOGGER | HADOOP\_ROOT\_LOGGER |
| HADOOP\_MAPRED\_IDENT\_STRING | HADOOP\_IDENT\_STRING |
| YARN\_CONF\_DIR | HADOOP\_CONF\_DIR |
| YARN\_LOG\_DIR | HADOOP\_LOG\_DIR |
| YARN\_LOGFILE | HADOOP\_LOGFILE |
| YARN\_NICENESS | HADOOP\_NICENESS |
| YARN\_STOP\_TIMEOUT | HADOOP\_STOP\_TIMEOUT |
| YARN\_PID\_DIR | HADOOP\_PID\_DIR |
| YARN\_ROOT\_LOGGER | HADOOP\_ROOT\_LOGGER |
| YARN\_IDENT\_STRING | HADOOP\_IDENT\_STRING |
| YARN\_OPTS | HADOOP\_OPTS |
| YARN\_SLAVES | HADOOP\_SLAVES |
| YARN\_USER\_CLASSPATH | HADOOP\_CLASSPATH |
| YARN\_USER\_CLASSPATH\_FIRST | HADOOP\_USER\_CLASSPATH\_FIRST |
| KMS\_CONFIG | HADOOP\_CONF\_DIR |
| KMS\_LOG | HADOOP\_LOG\_DIR |

• Assignee: John Smith
• Reporter: Allen Wittenauer
• Created: 05/Jan/15 16:24
• Updated: 18/Aug/20 17:23
• Resolved: 05/Feb/15 00:36

Description

It is a very common shell pattern in 3.x to effectively replace sub-project specific vars with generics. We should have a function that does this replacement and provides a warning to the end user that the old shell var is deprecated. Additionally, we should use this shell function to deprecate the shell vars that are holdovers already.

Issue Links

• blocks: HADOOP-10787 Rename/remove non-HADOOP_*, etc from the shell scripts
• breaks: HADOOP-13349 HADOOP_CLASSPATH vs HADOOP_USER_CLASSPATH
• is related to: HADOOP-11010 Post-9902 "Umbrella" JIRA
• is required by: HADOOP-11485 Pluggable shell integration
• relates to: HDFS-7913 HADOOP_HDFS_LOG_DIR should be HDFS_LOG_DIR in deprecations