Robert Muir created LUCENE-5673:
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Summary: MmapDirectory shouldn't pass along OOM wrapped as
IOException
Key: LUCENE-5673
URL: https://issues.apache.org/jira/browse/LUCENE-5673
Project: Lucene - Core
Issue Type: Bug
Reporter: Robert Muir
Attachments: LUCENE-5673.patch
The bug here is in java (not MMapDir), but i think we shoudl do something.
Users get confused when they configure their JVM to trigger something on OOM,
and then see "OutOfMemoryError: Map Failed": but their trigger doesnt fire.
Thats because in the jdk, when it maps files it catches OutOfMemoryError, asks
for a garbage collection, sleeps for 100 milliseconds, then tries to map again.
if it fails a second time it wraps the OOM in a generic IOException.
I think we should add a try/catch to our filechannel.map
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