Hmmm,
Looking at the JDT core release note I found this:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=267046
Seems like that is it.
Lars
Lars George wrote:
Hi,
I spent some time last night checking into this. The Eclipse stack
dump revealed that it goes apparently into an endless loop trying to
get the parameter names for a method in the Scan class. Here the
abbreviated stack dump:
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] "main"
prio=6 tid=0x11001590 nid=0xa0855720 runnable [0xbfffc000..0xbffff798]
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] at
org.eclipse.jdt.internal.core.SourceMapper.getUnqualifiedTypeSignature(SourceMapper.java:1146)
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] at
org.eclipse.jdt.internal.core.SourceMapper.getUnqualifiedTypeSignature(SourceMapper.java:1131)
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] at
org.eclipse.jdt.internal.core.SourceMapper.getUnqualifiedMethodHandle(SourceMapper.java:1059)
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] at
org.eclipse.jdt.internal.core.SourceMapper.getMethodParameterNames(SourceMapper.java:974)
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] at
org.eclipse.jdt.internal.core.BinaryMethod.getParameterNames(BinaryMethod.java:160)
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] at
org.eclipse.jdt.internal.codeassist.InternalCompletionProposal.findMethodParameterNames(InternalCompletionProposal.java:120)
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] at
org.eclipse.jdt.core.CompletionProposal.findParameterNames(CompletionProposal.java:1950)
7/27/09 8:13:37 PM [0x0-0x342342].org.eclipse.eclipse[17858] at
org.eclipse.jdt.ui.text.java.CompletionProposalLabelProvider.appendUnboundedParameterList(CompletionProposalLabelProvider.java:106)
...
So a method in Scan is causing this. While testing I notriced that I
can open the completion window and scroll down until the readFields()
method, going down one more line it hangs. The next method is
getFamilyMap(...). So I started testing the following things, always
recompiling the HBase jar and restarting Eclipse:
- Remove all JavaDoc
Does not help.
- Remove Scan return type from getFamilyMap()
Does not help.
- Removed the whole getFamilyMap() method
Works! No Eclipse lockup.
- Added getFamilyMap() again and changed NavigableSet to TreeSet
Does not help, Eclipse locks up again.
- Removed the "familyMap" parameter from getFamilyMap()
Works!
So the current status is that the type of the "familyMap" parameter is
causing Eclipse to lock up. I checked the source code for the
SourceMapper class that Eclipse uses and there is indeed a recursive
call to "getUnqualifiedTypeSignature" from itself. That seems to
return (or else we would see StackOverflowExceptions) but not end the
surrounding while loop. So that loop is running endlessly.
Next step would be to debug the Eclipse class for example.
Any thoughts so far?
Lars
Andrew Purtell wrote:
Interesting.
This happens to me with HBase trunk and the client.Scan class, if auto-
complete is triggered. I'll try the workaround suggested, because I've
had to resort several times to plain text editor, which is doable, but
not convenient.
- Andy
________________________________
From: Dave Latham <[email protected]>
To: [email protected]
Sent: Wednesday, July 1, 2009 7:05:21 AM
Subject: Re: Eclipse crashes when developing Row Filters
Hi Ramesh,
I've had the same problem with Eclipse 3.3 and 3.4. I'm hoping that the
just released 3.5 will have it fixed. It always seems to happen when
Eclipse tries to auto-complete something from the filter interface,
or if
you try to open up the interface. I've tested it with the prebuilt jars
(0.17, 0.18, and 0.19), and jars I've compiled myself, with or without a
source attachment, and it happens reliably. The only solution I've
found is
to set up an eclipse project with the HBase source and include that
during
development of code that uses the filters. Once I'm done with the
filters,
I switch back to using the jars.
I'd love hear if someone else has found a better solution.
Dave
On Wed, Jul 1, 2009 at 5:35 AM, Ramesh.Ramasamy
<[email protected]>wrote:
Hi,
I am using Eclipse 3.3, JDK 1.6.0_12 and Hadoop/Hbase 0.19.1.
On coding using some of the filter classes, eclipse hangs, and have no
other
option to continue it unless kill/restart the process. Does any body
figured
it out the problem and have a fix?
TIA,
Ramesh
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