FixedIntBlockIndexOutput encodes unnecessary integers at the end of a list
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Key: LUCENE-2340
URL: https://issues.apache.org/jira/browse/LUCENE-2340
Project: Lucene - Java
Issue Type: Bug
Components: Index
Affects Versions: Flex Branch
Reporter: Renaud Delbru
Priority: Minor
Fix For: Flex Branch
At closing time, the current FixedIntBlockIndexOutput flushes blocks of
blockSize even if there is only a few integers in the block.
This can be problematic and causes a big overhead when using large blockSize
(e.g., 1024), on small segments or on rare term posting list.
One solution will be to have a secondary flushBlock method with an additional
paramter: the valid length of a buffer. This method will be only called in the
FixedIntBlockIndexOutput#close() method.
The way this particular block of integers are encoded are left to subclasses.
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