[jira] [Updated] (HDDS-2692) Seek to file end throws EOF Exception

["Ayush Saxena (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDDS-2692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ayush Saxena updated HDDS-2692:
-------------------------------
    Status: Patch Available  (was: Open)

> Seek to file end throws EOF Exception
> -------------------------------------
>
>                 Key: HDDS-2692
>                 URL: https://issues.apache.org/jira/browse/HDDS-2692
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>            Reporter: Ayush Saxena
>            Assignee: Ayush Saxena
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Seek to File Length position throws EOF.
> Seeks by default should throw EOF past FileLength, not at file length position.
> Even in DFSInputStream it throws EOF above FileLength :
> {code:java}
>   public synchronized void seek(long targetPos) throws IOException {
>     if (targetPos > getFileLength()) {
>       throw new EOFException("Cannot seek after EOF");
>     }
> {code}
> Due to this behaviour EOF is shown as part of tail command too.
> {noformat}
> ayush@ayushpc:~/ozone/hadoop-ozone/hadoop-ozone/dist/target/ozone-0.5.0-SNAPSHOT/bin$ ./ozone fs -tail -f /file
> 2019-12-08 01:21:34,088 [main] INFO impl.MetricsConfig: Loaded properties from hadoop-metrics2.properties
> 2019-12-08 01:21:34,137 [main] INFO impl.MetricsSystemImpl: Scheduled Metric snapshot period at 10 second(s).
> 2019-12-08 01:21:34,137 [main] INFO impl.MetricsSystemImpl: XceiverClientMetrics metrics system started
> Test
> tail: EOF encountered at pos: 5 for key: file
> {noformat}



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