CODEWITHSUNDEEP
lucenesegmentation-fault
Fen
Fen

Reputation: 1

Segmentation fault with Lucene and MMapDirectory

we are using NIOFSDirectory instead of MMapDirectory in an intensive test load for indexing. But we are still getting a SIGSEV with MMapDirectory. Is there anything else I should be looking for? This is a Linux 64 bit machine. Head of the stack trace follows:

Please let me know what more info would be helpful.

Thanks...

A fatal error has been detected by the Java Runtime Environment:

SIGSEGV (0xb) at pc=0x00002aaaab285ea7, pid=2408, tid=1128642880

JRE version: 6.0_25-b06 Java VM: Java HotSpot(TM) 64-Bit Server VM (20.0-b11 mixed mode linux-amd64 compressed >oops) Problematic frame: J org.apache.lucene.store.MMapDirectory$MMapIndexInput.readByte()B

Upvotes: 0

Views: 480

Answers (1)

Michael McCandless
Michael McCandless

Reputation: 1186

You are most likely closing your IndexReader while other threads are still using it?

Lucene tries to catch this mis-use but it's detection is best-effort only.

You could also try calling MMapDirectory.setUseUnmap(false) to turn off unmapping; this should prevent the SIGSEGV.

Upvotes: 1

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