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From "Renaud Delbru (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-2340) FixedIntBlockIndexOutput encodes unnecessary integers at the end of a list
Date Mon, 22 Mar 2010 18:03:27 GMT
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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