Still, it's good to raise such issues here, and track them with Jira.
Even if it's not a Lucene issue, it'd be great to help Sun fix the JRE
issue. It's possible to reduce the Lucene case down to a simpler test
case to give to Sun. This is what happened with LUCENE-1282, which
resulted in Sun finally fixing the JRE bug.
There are various other "must be JRE/OS bug" issues...eg LUCENE-1342
(segv in older versions of Lucene on a 64 bit JRE) which is still open
and LUCENE-1566 (getting a false OOME on a large index while reading
norms).
Your situation sounds different from all of these... so could you
please open a Jira issue and post as many details as possible,
including a full stack trace of all threads (not just the hung ones)?
I think the similarity of the stack trace in LUCENE-1262 is
coincidental: it's just that you're also reading stored fields when
the hang hits.
Mike
Venkat Rangan wrote:
Yonik,
Thanks for your response. It is actually hanging on
RandomAccessFile.readBytes() when there are in fact bytes to read.
Switching to 32-bit JVM does not hang against the same index. Also,
as you point out, this may be a JVM/OS issue, but Lucene just
exposes it.
-venkat
-----Original Message-----
From: ysee...@gmail.com [mailto:ysee...@gmail.com] On Behalf Of
Yonik Seeley
Sent: Monday, March 23, 2009 1:06 PM
To: java-user@lucene.apache.org
Subject: Re: Lucene 2.2.0 in 64-bit JVM: IndexReader is hung
So even when you stop searches, you observe a thread stuck on
RandomAccessFile.readBytes()? In an active system, it would be normal
to see threads blocked there... just on different calls.
If RandomAccessFile.readBytes() is actually hanging, it's not a Lucene
issue, but a JVM/OS bug.
-Yonik
http://www.lucidimagination.com
On Mon, Mar 23, 2009 at 3:31 PM, Venkat Rangan
<venkat.ran...@clearwellsystems.com> wrote:
Hi,
We have an application using Lucene 2.2.0 running in a Sun HotSpot
JVM,
with JDK 1.6.0. We have had no problems with it in the 32-bit
version of
the JVM. We recently upgraded to 64-bit JVM and occasionally, we are
observing a hang. In particular, the stack trace looks like this -
the
RandomAccessFile.read() does not return ever - multiple stack
traces are
hung on this, pointing to no bytes available to read for specific
hits
returned by the searcher. We are aware of issue:
https://issues.apache.org/jira/browse/LUCENE-1262 which has a similar
stack trace. Is this a known problem or issue?
java.lang.Throwable
at java.io.RandomAccessFile.readBytes(Native Method)
at java.io.RandomAccessFile.read(RandomAccessFile.java:
322)
at
org.apache.lucene.store.FSDirectory
$FSIndexInput.readInternal(FSDirector
y.java:550)
at
org
.apache.lucene.store.BufferedIndexInput.readBytes(BufferedIndexInput.
java:122)
at
org.apache.lucene.index.CompoundFileReader
$CSIndexInput.readInternal(Com
poundFileReader.java:240)
at
org
.apache.lucene.store.BufferedIndexInput.refill(BufferedIndexInput.jav
a:143)
at
org
.apache.lucene.store.BufferedIndexInput.readByte(BufferedIndexInput.j
ava:38)
at
org.apache.lucene.store.IndexInput.readChars(IndexInput.java:107)
at
org.apache.lucene.store.IndexInput.readString(IndexInput.java:93)
at
org.apache.lucene.index.FieldsReader.addField(FieldsReader.java:253)
at
org.apache.lucene.index.FieldsReader.doc(FieldsReader.java:121)
at
org.apache.lucene.index.SegmentReader.document(SegmentReader.java:
346)
at
org.apache.lucene.index.MultiReader.document(MultiReader.java:117)
at
org.apache.lucene.index.MultiReader.document(MultiReader.java:106)
at
org.apache.lucene.index.IndexReader.document(IndexReader.java:437)
The call is something like:
try {
IndexReader indexReader = getLuIndexReader();
if (indexReader.isDeleted(docId) || docId >=
indexReader.maxDoc())
return null;
lu_Document = lu_indexReader.document(docId);
return lu_Document;
} catch (IOException e) {
...
}
Thanks,
-venkat
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