[ http://issues.apache.org/jira/browse/NUTCH-152?page=all ]
Paul Baclace updated NUTCH-152:
-------------------------------
Attachment: TaskRunner.java.patch
The patch addresses each issue listed in the detailed description of this bug.
The detailed description is suitable as a source change comment.
> TaskRunner io pipes are not setDaemon(true), cleanup and exception errors are
> incomplete, max heap too small
> ------------------------------------------------------------------------------------------------------------
>
> Key: NUTCH-152
> URL: http://issues.apache.org/jira/browse/NUTCH-152
> Project: Nutch
> Type: Bug
> Components: fetcher
> Versions: 0.8-dev
> Environment: all
> Reporter: Paul Baclace
> Attachments: TaskRunner.java.patch
>
> 1. io pipes should be setDaemon(true) so that process cannot hang.
> 2. error messages for Exceptions are incomplete since e.getMessage() is used
> and it can be empty (NullPointerException has an empty message). Change
> this to e.toString() which always has more meaning.
> 3. a separate thread is not used for the subprocess stdout pipe, but it must
> be a separate thread if setDaemon(true).
> 4. TaskRunner.kill() does not stop the io pipe threads, but it should.
> 5. If InterruptedException occurs, it was assumed to be for the current
> (main) thread, but it should check this with Thread.interrupted() otherwise
> spurious thread interrupts will be rethrown as IOException.
> 6. A recent run had some Tasktracker child processes that ran out of heap.
> The default max heap size should be larger.
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