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https://issues.apache.org/jira/browse/CARBONDATA-3401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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lamber-ken updated CARBONDATA-3401:
-----------------------------------
    Description: 
When use sdk to write carbondata files, use +System.nanoTime()+ assign to the 
start timestamp and use +System.nanoTime()+ assign to taskNo currently.

There are two bug here, first +System.nanoTime()+ is different from 
+System.currentTimeMillis()+, it can only be used to measure elapsed time and 
is not related to any other notion of system or wall-clock time. Second, the 
carbondata file name written by sdk was different from written by spark.

  was:
When use sdk to write carbondata files, use +System.nanoTime()+ assign to the 
start timestamp and use +System.nanoTime()+ assign to taskNo currently.

There are two bug here, first +System.nanoTime()+ is different from 
+System.currentTimeMillis()+, it can only be used to measure elapsed time and 
is not related to any other notion of system or wall-clock time. Second, the 
carbondata file name written by sdk was different from written by spark.+
+

 


> Fix the java sdk create wrong carbondata filename 
> --------------------------------------------------
>
>                 Key: CARBONDATA-3401
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-3401
>             Project: CarbonData
>          Issue Type: Bug
>          Components: data-load, other
>    Affects Versions: 1.5.3
>            Reporter: lamber-ken
>            Priority: Major
>             Fix For: 1.6.0
>
>         Attachments: fix_the_java_sdk_create_wrong_carbondata_filename.patch
>
>
> When use sdk to write carbondata files, use +System.nanoTime()+ assign to the 
> start timestamp and use +System.nanoTime()+ assign to taskNo currently.
> There are two bug here, first +System.nanoTime()+ is different from 
> +System.currentTimeMillis()+, it can only be used to measure elapsed time and 
> is not related to any other notion of system or wall-clock time. Second, the 
> carbondata file name written by sdk was different from written by spark.



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