[
https://issues.apache.org/jira/browse/NUTCH-1596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13700028#comment-13700028
]
Hudson commented on NUTCH-1596:
-------------------------------
Integrated in Nutch-trunk #2270 (See
[https://builds.apache.org/job/Nutch-trunk/2270/])
NUTCH-1596 HeadingsParseFilter not thread safe (Revision 1499722)
Result = SUCCESS
markus : http://svn.apache.org/viewvc/nutch/trunk/?view=rev&rev=1499722
Files :
* /nutch/trunk/CHANGES.txt
*
/nutch/trunk/src/plugin/headings/src/java/org/apache/nutch/parse/headings/HeadingsParseFilter.java
> HeadingsParseFilter not thread safe
> -----------------------------------
>
> Key: NUTCH-1596
> URL: https://issues.apache.org/jira/browse/NUTCH-1596
> Project: Nutch
> Issue Type: Bug
> Affects Versions: 1.7
> Reporter: Markus Jelsma
> Assignee: Markus Jelsma
> Fix For: 1.8
>
> Attachments: NUTCH-1596-v1.patch
>
>
> The NodeWalker used by the HeadingsParseFilter sometimes reports a
> NullPointerException.
> {code}
> 2013-07-02 11:02:09,428 WARN parse.ParseUtil - Error parsing .... with
> org.apache.nutch.parse.tika.TikaParser@2c8b586a
> java.util.concurrent.ExecutionException: java.lang.NullPointerException
> at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:262)
> at java.util.concurrent.FutureTask.get(FutureTask.java:119)
> at org.apache.nutch.parse.ParseUtil.runParser(ParseUtil.java:162)
> at org.apache.nutch.parse.ParseUtil.parse(ParseUtil.java:93)
> at
> org.apache.nutch.fetcher.Fetcher$FetcherThread.output(Fetcher.java:963)
> at
> org.apache.nutch.fetcher.Fetcher$FetcherThread.run(Fetcher.java:722)
> Caused by: java.lang.NullPointerException
> at org.apache.xerces.dom.ParentNode.nodeListItem(Unknown Source)
> at org.apache.xerces.dom.ParentNode.item(Unknown Source)
> at org.apache.nutch.util.NodeWalker.nextNode(NodeWalker.java:75)
> at
> org.apache.nutch.parse.headings.HeadingsParseFilter.getElement(HeadingsParseFilter.java:84)
> at
> org.apache.nutch.parse.headings.HeadingsParseFilter.filter(HeadingsParseFilter.java:47)
> at
> org.apache.nutch.parse.HtmlParseFilters.filter(HtmlParseFilters.java:98)
> at
> org.apache.nutch.parse.tika.TikaParser.getParse(TikaParser.java:210)
> at org.apache.nutch.parse.ParseCallable.call(ParseCallable.java:35)
> at org.apache.nutch.parse.ParseCallable.call(ParseCallable.java:24)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:722)
> {code}
> This is strange because it only rarely fails and the nextNode() method checks
> hasNext() and there is no concurrent access if i'm correct.
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