Thanks for the info. i didn't have this problem before nutch 1.1 where my biggest change was the introduction of parse-tika.
4 out of 5 threads are RUNNABLE in this situation: Stack trace: org.apache.tika.parser.video.FLVParser.parse(FLVParser.java:246) org.apache.nutch.parse.tika.TikaParser.getParse(TikaParser.java:95) org.apache.nutch.parse.ParseUtil.parse(ParseUtil.java:82) org.apache.nutch.fetcher.Fetcher$FetcherThread.output(Fetcher.java:878) org.apache.nutch.fetcher.Fetcher$FetcherThread.run(Fetcher.java:646) which is actually pretty weird and difficult to understand for me. after the fetcher aborts with N hung threads, they just stay there hunging. In the jconsole i can still see the same stracktrace of these threads on FLVParser.parse(). They are not downloading (i can see the from the traffic on the network) and they should stop at a certain time (i have content limit at 50MB). Maybe the problem is that FLVParser.parse() doesn't like trunkated content for FLV streams. I'll try to craw-urlfilter-ignore the FLV files. Another possiiblity i thought of is that the threads were dead garbage-collecting until hadoop recalls them as dead tasks. That would make sense because that "zombie" situation lasts precisely 5 minutes all the time. does it make sense to you? reinhard schwab wrote: > connect with jconsole to the java vm of nutch and look at the stack > traces of the threads. > you will get more info there. > > Claudio Martella schrieb: > >> Hello, >> >> I'm using nutch 1.1 (with crawl command) to crawl an intranet document >> archive via webdav. At the end of each fetch phase the fetcher hungs >> like this: >> >> -activeThreads=5, spinWaiting=0, fetchQueues.totalSize=250 >> >> from my analysis of network traffic, nothing is passing by. The logs show: >> >> 2010-06-30 13:38:35,335 INFO fetcher.Fetcher - fetching >> https://192.168.10.10/data/public/50.90_In_Bearbeitung/Stefano%20P/normen2010/normen2010.indd >> 2010-06-30 13:38:35,381 INFO auth.AuthChallengeProcessor - basic >> authentication scheme selected >> 2010-06-30 13:38:35,819 INFO fetcher.Fetcher - -activeThreads=5, >> spinWaiting=0, fetchQueues.totalSize=249 >> 2010-06-30 13:38:36,824 INFO fetcher.Fetcher - -activeThreads=5, >> spinWaiting=0, fetchQueues.totalSize=250 >> >> which i guess means i finish downloading the specified file and then it >> hungs until: >> >> 2010-06-30 13:43:35,963 INFO fetcher.Fetcher - -activeThreads=5, >> spinWaiting=0, fetchQueues.totalSize=250 >> 2010-06-30 13:43:35,963 WARN fetcher.Fetcher - Aborting with 5 hung >> threads. >> >> so basically 5 minutes without doing anything. >> >> this is my configuration in nutch-site.xml related to fetcher: >> >> <property> >> <name>fetcher.server.delay</name> >> <value>0.0</value> >> </property> >> >> <property> >> <name>fetcher.server.min.delay</name> >> <value>0.0</value> >> </property> >> >> <property> >> <name>fetcher.threads.fetch</name> >> <value>5</value> >> </property> >> >> <property> >> <name>fetcher.threads.per.host</name> >> <value>5</value> >> </property> >> >> <property> >> <name>fetcher.threads.per.host.by.ip</name> >> <value>false</value> >> </property> >> >> Any idea why this is happening? >> >> >> Thanks >> >> >> Claudio >> >> >> > > > -- Claudio Martella Digital Technologies Unit Research & Development - Analyst TIS innovation park Via Siemens 19 | Siemensstr. 19 39100 Bolzano | 39100 Bozen Tel. +39 0471 068 123 Fax +39 0471 068 129 [email protected] http://www.tis.bz.it Short information regarding use of personal data. According to Section 13 of Italian Legislative Decree no. 196 of 30 June 2003, we inform you that we process your personal data in order to fulfil contractual and fiscal obligations and also to send you information regarding our services and events. Your personal data are processed with and without electronic means and by respecting data subjects' rights, fundamental freedoms and dignity, particularly with regard to confidentiality, personal identity and the right to personal data protection. At any time and without formalities you can write an e-mail to [email protected] in order to object the processing of your personal data for the purpose of sending advertising materials and also to exercise the right to access personal data and other rights referred to in Section 7 of Decree 196/2003. The data controller is TIS Techno Innovation Alto Adige, Siemens Street n. 19, Bolzano. You can find the complete information on the web site www.tis.bz.it.
