[LUCENE-7527] Facing unsafe memory access operation error while calling searcherManager.maybeReopen()

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.5
• Component/s: core/search
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Jagmohan Singh
• Created: 28/Oct/16 19:39
• Updated: 28/Aug/22 15:05

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 occurs when we call maybeReopen() method during heavy writes to the indices 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)