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Posted to dev@lucene.apache.org by "Jean-Philippe Robichaud (JIRA)" <ji...@apache.org> on 2007/03/22 21:14:32 UTC
[jira] Created: (LUCENE-844)
org.apache.lucene.index.SegmentInfos.FindSegmentsFile.run() throwing
NullPointerException
org.apache.lucene.index.SegmentInfos.FindSegmentsFile.run() throwing NullPointerException
-----------------------------------------------------------------------------------------
Key: LUCENE-844
URL: https://issues.apache.org/jira/browse/LUCENE-844
Project: Lucene - Java
Issue Type: Bug
Components: Store
Affects Versions: 2.1
Reporter: Jean-Philippe Robichaud
When writing a WeakReference based cache for storing IndexReader objects, I was hit by a NullPointerException thrown from nowhere
The actual stacktrace I got is:
java.lang.NullPointerException
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:482)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:147)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:142)
<...>
The culprit code is in org.apache.lucene.index.SegmentInfos.FindSegmentsFile :
[line 471]
if (0 == method) {
if (directory != null) {
files = directory.list();
} else {
files = fileDirectory.list();
}
gen = getCurrentSegmentGeneration(files);
if (gen == -1) {
String s = "";
for(int i=0;i<files.length;i++) { << EXCEPTION THROWN FROM HERE [line 482]
s += " " + files[i];
}
throw new FileNotFoundException("no segments* file found: files:" + s);
}
}
A check on the "files" object is required as the fileDirectory.list() can return null.
In my case, the problem came from the fact that I had no more FileDescriptor available (bug somewhere else in my code) but the NPE was the only info I got...
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[jira] Commented: (LUCENE-844)
org.apache.lucene.index.SegmentInfos.FindSegmentsFile.run() throwing
NullPointerException
Posted by "Michael McCandless (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12483327 ]
Michael McCandless commented on LUCENE-844:
-------------------------------------------
Good question, I'm not sure. I think normally a point release (eg a 2.1.1) would happen if "enough" serious issues have been found and fixed since 2.1 was released, but there hasn't been much discussion yet on the dev list (java-dev) for a 2.1.1 release.
> org.apache.lucene.index.SegmentInfos.FindSegmentsFile.run() throwing NullPointerException
> -----------------------------------------------------------------------------------------
>
> Key: LUCENE-844
> URL: https://issues.apache.org/jira/browse/LUCENE-844
> Project: Lucene - Java
> Issue Type: Bug
> Components: Store
> Affects Versions: 2.1
> Reporter: Jean-Philippe Robichaud
>
> When writing a WeakReference based cache for storing IndexReader objects, I was hit by a NullPointerException thrown from nowhere
> The actual stacktrace I got is:
> java.lang.NullPointerException
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:482)
> at org.apache.lucene.index.IndexReader.open(IndexReader.java:147)
> at org.apache.lucene.index.IndexReader.open(IndexReader.java:142)
> <...>
> The culprit code is in org.apache.lucene.index.SegmentInfos.FindSegmentsFile :
> [line 471]
> if (0 == method) {
> if (directory != null) {
> files = directory.list();
> } else {
> files = fileDirectory.list();
> }
> gen = getCurrentSegmentGeneration(files);
> if (gen == -1) {
> String s = "";
> for(int i=0;i<files.length;i++) { << EXCEPTION THROWN FROM HERE [line 482]
> s += " " + files[i];
> }
> throw new FileNotFoundException("no segments* file found: files:" + s);
> }
> }
> A check on the "files" object is required as the fileDirectory.list() can return null.
> In my case, the problem came from the fact that I had no more FileDescriptor available (bug somewhere else in my code) but the NPE was the only info I got...
--
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[jira] Commented: (LUCENE-844)
org.apache.lucene.index.SegmentInfos.FindSegmentsFile.run() throwing
NullPointerException
Posted by "Jean-Philippe Robichaud (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12483305 ]
Jean-Philippe Robichaud commented on LUCENE-844:
------------------------------------------------
Oh, that's great. Will it be released soon against the lucene_2_1 branch ?
> org.apache.lucene.index.SegmentInfos.FindSegmentsFile.run() throwing NullPointerException
> -----------------------------------------------------------------------------------------
>
> Key: LUCENE-844
> URL: https://issues.apache.org/jira/browse/LUCENE-844
> Project: Lucene - Java
> Issue Type: Bug
> Components: Store
> Affects Versions: 2.1
> Reporter: Jean-Philippe Robichaud
>
> When writing a WeakReference based cache for storing IndexReader objects, I was hit by a NullPointerException thrown from nowhere
> The actual stacktrace I got is:
> java.lang.NullPointerException
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:482)
> at org.apache.lucene.index.IndexReader.open(IndexReader.java:147)
> at org.apache.lucene.index.IndexReader.open(IndexReader.java:142)
> <...>
> The culprit code is in org.apache.lucene.index.SegmentInfos.FindSegmentsFile :
> [line 471]
> if (0 == method) {
> if (directory != null) {
> files = directory.list();
> } else {
> files = fileDirectory.list();
> }
> gen = getCurrentSegmentGeneration(files);
> if (gen == -1) {
> String s = "";
> for(int i=0;i<files.length;i++) { << EXCEPTION THROWN FROM HERE [line 482]
> s += " " + files[i];
> }
> throw new FileNotFoundException("no segments* file found: files:" + s);
> }
> }
> A check on the "files" object is required as the fileDirectory.list() can return null.
> In my case, the problem came from the fact that I had no more FileDescriptor available (bug somewhere else in my code) but the NPE was the only info I got...
--
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[jira] Resolved: (LUCENE-844)
org.apache.lucene.index.SegmentInfos.FindSegmentsFile.run() throwing
NullPointerException
Posted by "Michael McCandless (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-844?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless resolved LUCENE-844.
---------------------------------------
Resolution: Duplicate
Thanks for opening this issue!
This is actually fixed already on the trunk (not yet released) under LUCENE-825.
> org.apache.lucene.index.SegmentInfos.FindSegmentsFile.run() throwing NullPointerException
> -----------------------------------------------------------------------------------------
>
> Key: LUCENE-844
> URL: https://issues.apache.org/jira/browse/LUCENE-844
> Project: Lucene - Java
> Issue Type: Bug
> Components: Store
> Affects Versions: 2.1
> Reporter: Jean-Philippe Robichaud
>
> When writing a WeakReference based cache for storing IndexReader objects, I was hit by a NullPointerException thrown from nowhere
> The actual stacktrace I got is:
> java.lang.NullPointerException
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:482)
> at org.apache.lucene.index.IndexReader.open(IndexReader.java:147)
> at org.apache.lucene.index.IndexReader.open(IndexReader.java:142)
> <...>
> The culprit code is in org.apache.lucene.index.SegmentInfos.FindSegmentsFile :
> [line 471]
> if (0 == method) {
> if (directory != null) {
> files = directory.list();
> } else {
> files = fileDirectory.list();
> }
> gen = getCurrentSegmentGeneration(files);
> if (gen == -1) {
> String s = "";
> for(int i=0;i<files.length;i++) { << EXCEPTION THROWN FROM HERE [line 482]
> s += " " + files[i];
> }
> throw new FileNotFoundException("no segments* file found: files:" + s);
> }
> }
> A check on the "files" object is required as the fileDirectory.list() can return null.
> In my case, the problem came from the fact that I had no more FileDescriptor available (bug somewhere else in my code) but the NPE was the only info I got...
--
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You can reply to this email to add a comment to the issue online.
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