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From "Rakesh R (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7764) DirectoryScanner shouldn't abort the scan if one directory had an error
Date Wed, 04 Nov 2015 13:22:27 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rakesh R updated HDFS-7764:
---------------------------
    Target Version/s: 3.0.0

> DirectoryScanner shouldn't abort the scan if one directory had an error
> -----------------------------------------------------------------------
>
>                 Key: HDFS-7764
>                 URL: https://issues.apache.org/jira/browse/HDFS-7764
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.7.0
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>         Attachments: HDFS-7764-01.patch, HDFS-7764.patch
>
>
> If there is an exception while preparing the ScanInfo for the blocks in the directory,
DirectoryScanner is immediately throwing exception and coming out of the current scan cycle.
It would be good if he can signal #cancel() to the other pending tasks .
> DirectoryScanner.java
> {code}
>     for (Entry<Integer, Future<ScanInfoPerBlockPool>> report :
>         compilersInProgress.entrySet()) {
>       try {
>         dirReports[report.getKey()] = report.getValue().get();
>       } catch (Exception ex) {
>         LOG.error("Error compiling report", ex);
>         // Propagate ex to DataBlockScanner to deal with
>         throw new RuntimeException(ex);
>       }
> {code}



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