Lucene RAM Directory doesn't work for Index Size > 8 GB
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Key: LUCENE-957
URL: https://issues.apache.org/jira/browse/LUCENE-957
Project: Lucene - Java
Issue Type: Bug
Components: Store
Reporter: Doron Cohen
Assignee: Doron Cohen
from user list - http://www.gossamer-threads.com/lists/lucene/java-user/50982
Problem seems to be casting issues in RAMInputStream.
Line 90:
bufferStart = BUFFER_SIZE * currentBufferIndex;
both rhs are ints while lhs is long.
so a very large product would first overflow MAX_INT, become negative, and only
then (auto) casted to long, but this is too late.
Line 91:
bufferLength = (int) (length - bufferStart);
both rhs are longs while lhs is int.
so the (int) cast result may turn negative and the logic that follows would be
wrong.
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