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Posted to dev@lucene.apache.org by "Jagmohan Singh (JIRA)" <ji...@apache.org> on 2016/10/28 19:44:58 UTC
[jira] [Updated] (LUCENE-7527) Facing unsafe memory access
operation error while calling searcherManager.maybeReopen()
[ https://issues.apache.org/jira/browse/LUCENE-7527?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jagmohan Singh updated LUCENE-7527:
-----------------------------------
Description:
We are getting below error while calling searcherManager.maybeReopen() method. We are using MMAP implementation to read NFS index directory mounted against 3 servers. We have a different process to update the indices and 3 other processes to read from the same index. What we believe is that this issue is occuring when we call maybeReopen() method during heavy writes to the indices which are happening at that time and MMap implementation is not able to coop with it..
Caused by: java.lang.InternalError: a fault occurred in a recent unsafe memory access operation in compiled Java code
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.lucene.store.MMapDirectory.cleanMapping(MMapDirectory.java:158)
at org.apache.lucene.store.MMapDirectory$MMapIndexInput.close(MMapDirectory.java:389)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:690)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:593)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:359)
at org.apache.lucene.index.SegmentInfos.readCurrentVersion(SegmentInfos.java:480)
at org.apache.lucene.index.DirectoryReader.isCurrent(DirectoryReader.java:901)
at org.apache.lucene.index.DirectoryReader.doOpenNoWriter(DirectoryReader.java:471)
at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:450)
at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:391)
at org.apache.lucene.index.IndexReader.openIfChanged(IndexReader.java:497)
at org.apache.lucene.search.SearcherManager.maybeReopen(SearcherManager.java:162)
was:
We are getting below error while calling searcherManager.maybeReopen() method. We are using MMAP to read NFS index directory mounted against 3 servers. We have a different process to update the indices and have 3 processes to read from the index. What we believe it when we face this error in one of the readers is due to heavy writes int he indices which are happening at that time and MMap implementation is not able to coop with it..
Caused by: java.lang.InternalError: a fault occurred in a recent unsafe memory access operation in compiled Java code
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.lucene.store.MMapDirectory.cleanMapping(MMapDirectory.java:158)
at org.apache.lucene.store.MMapDirectory$MMapIndexInput.close(MMapDirectory.java:389)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:690)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:593)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:359)
at org.apache.lucene.index.SegmentInfos.readCurrentVersion(SegmentInfos.java:480)
at org.apache.lucene.index.DirectoryReader.isCurrent(DirectoryReader.java:901)
at org.apache.lucene.index.DirectoryReader.doOpenNoWriter(DirectoryReader.java:471)
at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:450)
at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:391)
at org.apache.lucene.index.IndexReader.openIfChanged(IndexReader.java:497)
at org.apache.lucene.search.SearcherManager.maybeReopen(SearcherManager.java:162)
> Facing unsafe memory access operation error while calling searcherManager.maybeReopen()
> ---------------------------------------------------------------------------------------
>
> Key: LUCENE-7527
> URL: https://issues.apache.org/jira/browse/LUCENE-7527
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Affects Versions: 3.5
> Reporter: Jagmohan Singh
>
> We are getting below error while calling searcherManager.maybeReopen() method. We are using MMAP implementation to read NFS index directory mounted against 3 servers. We have a different process to update the indices and 3 other processes to read from the same index. What we believe is that this issue is occuring when we call maybeReopen() method during heavy writes to the indices which are happening at that time and MMap implementation is not able to coop with it..
> Caused by: java.lang.InternalError: a fault occurred in a recent unsafe memory access operation in compiled Java code
> at java.security.AccessController.doPrivileged(Native Method)
> at org.apache.lucene.store.MMapDirectory.cleanMapping(MMapDirectory.java:158)
> at org.apache.lucene.store.MMapDirectory$MMapIndexInput.close(MMapDirectory.java:389)
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:690)
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:593)
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:359)
> at org.apache.lucene.index.SegmentInfos.readCurrentVersion(SegmentInfos.java:480)
> at org.apache.lucene.index.DirectoryReader.isCurrent(DirectoryReader.java:901)
> at org.apache.lucene.index.DirectoryReader.doOpenNoWriter(DirectoryReader.java:471)
> at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:450)
> at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:391)
> at org.apache.lucene.index.IndexReader.openIfChanged(IndexReader.java:497)
> at org.apache.lucene.search.SearcherManager.maybeReopen(SearcherManager.java:162)
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