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Posted to common-issues@hadoop.apache.org by "Viraj Jasani (Jira)" <ji...@apache.org> on 2023/10/26 17:01:00 UTC
[jira] [Commented] (HADOOP-18952) FsCommand Stat class set the timeZone"UTC", which is different from the machine's timeZone
[ https://issues.apache.org/jira/browse/HADOOP-18952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17780014#comment-17780014 ]
Viraj Jasani commented on HADOOP-18952:
---------------------------------------
This has been the case since the beginning:
Stat:
{code:java}
protected final SimpleDateFormat timeFmt;
{
timeFmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
timeFmt.setTimeZone(TimeZone.getTimeZone("UTC"));
}{code}
Ls:
{code:java}
protected final SimpleDateFormat dateFormat =
new SimpleDateFormat("yyyy-MM-dd HH:mm"); {code}
> FsCommand Stat class set the timeZone"UTC", which is different from the machine's timeZone
> ------------------------------------------------------------------------------------------
>
> Key: HADOOP-18952
> URL: https://issues.apache.org/jira/browse/HADOOP-18952
> Project: Hadoop Common
> Issue Type: Bug
> Environment: Using Hadoop 3.3.4-release
> Reporter: liang yu
> Priority: Major
> Attachments: image-2023-10-26-10-07-11-637.png
>
>
> Using Hadoop version 3.3.4
>
> When executing Ls command and Stat command on the same hadoop file, I get two timestamps.
>
> {code:java}
> hdfs dfs -stat "modify_time %y, access_time%x" /path/to/file{code}
> returns:
> modify_time {_}*2023-10-17 01:43:05*{_}, access_time _*2023-10-17 01:41:00*_
>
> {code:java}
> hdfs dfs -ls /path/to/file{code}
> returns:
> {-}rw{-}rw-r–+ 3 user_name user_group 247400339 _*2023-10-17 09:43*_ /path/to/file
>
> these two timestamps has the difference 8hours.
> I am in China, the timezone is “UTC+8”， so the timestamp from LS command is correct and timestamp from STAT command is wrong.
>
> !image-2023-10-26-10-07-11-637.png!
>
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