Fred Peng created HDFS-14139:
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Summary: FsShell ls and stat command return different Modification
Time on display.
Key: HDFS-14139
URL: https://issues.apache.org/jira/browse/HDFS-14139
Project: Hadoop HDFS
Issue Type: Improvement
Components: fs, shell
Reporter: Fred Peng
When we run "hdfs dfs -ls" or "hdfs dfs -stat" on the same file/directory, the
time of results are different.
Like this:
>> $ ./hdfs dfs -stat /user/xxx/collie-pt-canary
>> 2018-12-10 10:04:57
>> ./hdfs dfs -ls /user/xxx/collie-pt-canary
>> -rw-r--r-- 3 xxx supergroup 0 2018-12-10 18:04
Strangely, we found the time is different(8 hours). The stat command uses UTC
timezone, but the Ls command uses system local timezone.
Why does the stat command use UTC timezone, but Ls not?
{code:java}
// in Stat.java
timeFmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
timeFmt.setTimeZone(TimeZone.getTimeZone("UTC"));{code}
By the way, in Unix/Linux the ls and stat return the same time on display.
Should we unify the timezone?
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