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Bug 234383 - NullPointerException at org.netbeans.modules.profiler.actions.CompareSnapshotsAction$SelectExternalSnapshotsPanel$4.doInBackground
Summary: NullPointerException at org.netbeans.modules.profiler.actions.CompareSnapshot...
Status: RESOLVED FIXED
Alias: None
Product: profiler
Classification: Unclassified
Component: Base (show other bugs)
Version: 7.4
Hardware: All All
: P3 normal (vote)
Assignee: Jiri Sedlacek
URL:
Keywords: VISUALVM
Depends on:
Blocks:
 
Reported: 2013-08-14 12:25 UTC by Ondrej Brejla
Modified: 2013-08-15 10:33 UTC (History)
0 users

See Also:
Issue Type: DEFECT
Exception Reporter: 197536

Attachments
stacktrace (411 bytes, text/plain)
2013-08-14 12:25 UTC, Ondrej Brejla 		Details
Frist snapshot (40.64 KB, application/octet-stream)
2013-08-14 13:32 UTC, Ondrej Brejla 		Details
Second snapshot (59.94 KB, application/octet-stream)
2013-08-14 13:32 UTC, Ondrej Brejla 		Details
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Description Ondrej Brejla 2013-08-14 12:25:19 UTC 
Build: NetBeans IDE Dev (Build 20130814-db38a80543e8)
VM: Java HotSpot(TM) Client VM, 23.25-b01, Java(TM) SE Runtime Environment, 1.7.0_25-b15
OS: Linux

User Comments:
obrejla: Comparing 2 snapshots (.npss).

GUEST: Trying to compare to npss snashots.




Stacktrace: 
java.lang.NullPointerException
   at org.netbeans.modules.profiler.actions.CompareSnapshotsAction$SelectExternalSnapshotsPanel$4.doInBackground(CompareSnapshotsAction.java:339)
   at org.netbeans.lib.profiler.ui.SwingWorker$2.run(SwingWorker.java:159)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)
Comment 1 Ondrej Brejla 2013-08-14 12:25:21 UTC 
Created attachment 138683 [details]
stacktrace
Comment 2 Jiri Sedlacek 2013-08-14 13:31:10 UTC 
Can you please attach the two snapshots you're comparing? Thanks!
Comment 3 Ondrej Brejla 2013-08-14 13:32:33 UTC 
Created attachment 138689 [details]
Frist snapshot
Comment 4 Ondrej Brejla 2013-08-14 13:32:48 UTC 
Created attachment 138690 [details]
Second snapshot
Comment 5 Jiri Sedlacek 2013-08-14 13:40:09 UTC 
Reproduced, thanks! The main problem is that .npss files are not meant to be compared. You should save them as .nps snapshots for the comparison.
Comment 6 Ondrej Brejla 2013-08-14 13:45:36 UTC 
Yes I thought that ;) But in 7.3.1 if one slected two npss files, the OK button was disabled. In 7.4 dev it's enabled. Maybe it will help. And some more yellow warning perhaps ;)
Comment 7 Jiri Sedlacek 2013-08-14 14:03:20 UTC 
Only .nps snapshots can be compared, removed the All Files filter.

Fixed by http://hg.netbeans.org/profiler-main/rev/7cad435aa7da.
Comment 8 Jiri Sedlacek 2013-08-15 10:33:32 UTC 
The NPE can still be thrown for invalid .nps snapshots (or files renamed to .nps). Cornercases fixed by http://hg.netbeans.org/profiler-main/rev/777fdb5db3ea.