hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Rakesh R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7764) DirectoryScanner should cancel the future tasks when #compileReport throws exception
Date Sun, 15 Mar 2015 18:09:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14362480#comment-14362480
] 

Rakesh R commented on HDFS-7764:
--------------------------------

Yes [~cmccabe], your point makes sense. Let me try to implement as per your suggestions.

> DirectoryScanner should cancel the future tasks when #compileReport throws exception
> ------------------------------------------------------------------------------------
>
>                 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.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}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message