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https://issues.apache.org/jira/browse/HBASE-1627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Doğacan Güney updated HBASE-1627:
---------------------------------

    Attachment: tableinput.patch

A simple patch to change catch clause to catch all IOException-s. Are there any 
downsides to this? If an IOException is thrown, reset your scanner, try again 
and if it fails again your job fails. Makes sense to me :D

> TableInputFormatBase#nextKeyValue catches the wrong exception
> -------------------------------------------------------------
>
>                 Key: HBASE-1627
>                 URL: https://issues.apache.org/jira/browse/HBASE-1627
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.0
>            Reporter: Doğacan Güney
>            Priority: Minor
>         Attachments: tableinput.patch
>
>
> TableInputFormatBase#nextKeyValue only catches UnknownScannerException from 
> Scanner.next. However, scanner may throw other exceptions:
> {code}
> /* from HTable.ClientScanner#next */
>           try {
>             values = getConnection().getRegionServerWithRetries(callable);
>           } catch (IOException e) {
>             if (e instanceof UnknownScannerException &&
>                 lastNext + scannerTimeout < System.currentTimeMillis()) {
>               ScannerTimeoutException ex = new ScannerTimeoutException();
>               ex.initCause(e);
>               throw ex;
>             }
>             throw e;
>           }
> {code}
> Is there any reason why TIFB does not catch ScannerTimeoutException?

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