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[Zookeeper-developer] [ zookeeper-Bugs-1946934 ] NPE during normal operations
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From: SourceForge.net <no...@so...> - 2008-06-10 21:13:07
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Bugs item #1946934, was opened at 2008-04-19 17:36 Message generated for change (Comment added) made by phunt You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=1008544&aid=1946934&group_id=209147 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: 3.0.0 >Status: Closed Resolution: None Priority: 5 Private: No Submitted By: Ted Dunning (tedunning) Assigned to: Mahadev Konar (mahadevkonar) Summary: NPE during normal operations Initial Comment: Somehow, I got my server to do this evil thing. I will try to figure out how to do this more consistently. 4/19/08 5:30:31 PM PDT [FinalRequestProcessor.java@220][8]: ****************************** 11944c2037100d8 256 fffffffffffffffe txn type = unknown getChildren n/a 4/19/08 5:30:31 PM PDT [FinalRequestProcessor.java@227][8]: ffffffff0 4/19/08 5:30:31 PM PDT [FinalRequestProcessor.java@228][8]: : java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:157) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:730) at com.yahoo.zookeeper.server.DataTree.getNode(DataTree.java:84) at com.yahoo.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:205) at com.yahoo.zookeeper.server.SyncRequestProcessor.flush(SyncRequestProcessor.java:226) at com.yahoo.zookeeper.server.SyncRequestProcessor.run(SyncRequestProcessor.java:113) 4/19/08 5:30:49 PM PDT [FinalRequestProcessor.java@220][8]: ****************************** 11944c2037100d8 257 fffffffffffffffe txn type = unknown exists n/a 4/19/08 5:30:49 PM PDT [FinalRequestProcessor.java@227][8]: ffffffff0 4/19/08 5:30:49 PM PDT [FinalRequestProcessor.java@228][8]: : java.lang.NullPointerException at com.yahoo.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:169) at com.yahoo.zookeeper.server.SyncRequestProcessor.flush(SyncRequestProcessor.java:226) at com.yahoo.zookeeper.server.SyncRequestProcessor.run(SyncRequestProcessor.java:113) ---------------------------------------------------------------------- >Comment By: Patrick Hunt (phunt) Date: 2008-06-10 14:13 Message: Logged In: YES user_id=12853 Originator: NO Moved to Apache https://issues.apache.org/jira/browse/ZOOKEEPER-13 ---------------------------------------------------------------------- Comment By: Ted Dunning (tedunning) Date: 2008-05-29 17:53 Message: Logged In: YES user_id=972206 Originator: YES I am pretty sure that I had a null even though it was impossible (in the programming sense). I haven't had this problem since then. ---------------------------------------------------------------------- Comment By: Mahadev Konar (mahadevkonar) Date: 2008-05-29 17:21 Message: Logged In: YES user_id=1926680 Originator: NO Ted, just want to check if null path is the only problem here. In your comments you mentioned that null path might not be possible. Can you check to see if this is true -- (in a QA sense -- not a programmer sense)? :) ---------------------------------------------------------------------- Comment By: Patrick Hunt (phunt) Date: 2008-05-05 16:03 Message: Logged In: YES user_id=12853 Originator: NO Ben looks like you had a handle on this. Please submit a patch. ---------------------------------------------------------------------- Comment By: Ted Dunning (tedunning) Date: 2008-04-22 10:58 Message: Logged In: YES user_id=972206 Originator: YES Good thing then to have found it. My only problem is that by inspection, my code "can't" be sending the null. The usual software engineering definition of "can't" is obviously the one that I mean here. ---------------------------------------------------------------------- Comment By: Benjamin Reed (breed) Date: 2008-04-22 08:34 Message: Logged In: YES user_id=154690 Originator: NO I think your suspicion is correct. (I thought we were handling this.) It's actually a double bug! Both the server and client should check for a null path. ---------------------------------------------------------------------- Comment By: Ted Dunning (tedunning) Date: 2008-04-21 10:35 Message: Logged In: YES user_id=972206 Originator: YES java version "1.5.0_13" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-b05-241) Java HotSpot(TM) Client VM (build 1.5.0_13-121, mixed mode, sharing) Running on a mac under OSX 10.4 I think actually that this is actually a case of invalid arguments (from me) causing an obscure message rather than being caught. My suspicion is null path passed to create. I still owe you a test case. ---------------------------------------------------------------------- Comment By: Benjamin Reed (breed) Date: 2008-04-21 09:55 Message: Logged In: YES user_id=154690 Originator: NO Which version of Java are you using? ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=1008544&aid=1946934&group_id=209147 |
