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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-2662) BytesHash
Date Thu, 30 Sep 2010 16:31:33 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Simon Willnauer updated LUCENE-2662:
------------------------------------

    Attachment: LUCENE-2662.patch

Next iteration - seems to be very close!

I have applied the following changes:

* introduces a AtomicLong to track bytesUsed in DocumetnsWriter, TermsHashPerField, ByteRefHash
and RecyclingByteBlockAllocator
* Factored out  a BytesStartArray class from BytesRefHash that manages the int[] holding the
bytesStart offsets. TermsHashPerField subclasses and manages the ParallelPostingsArray through
it. 
* remove remaining no-commits
* made RecyclingbyteBlockAllocator synced by default (we use synchronized methods for it now)

I run a quick Wikipedia 100k docs benchmark against trunk vs. LUCENE-2662 and the results
are promising.
|version|rec/sec|elapsed sec|avgUsedMem|
|LUCENE-2662|717.30|139.41|536,682,592|
|trunk| 682.66|146.49|546,065,344|

I will run the 10M benchmark once I get back to this.


> BytesHash
> ---------
>
>                 Key: LUCENE-2662
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2662
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>    Affects Versions: Realtime Branch, 4.0
>            Reporter: Jason Rutherglen
>            Assignee: Simon Willnauer
>            Priority: Minor
>             Fix For: Realtime Branch, 4.0
>
>         Attachments: LUCENE-2662.patch, LUCENE-2662.patch, LUCENE-2662.patch, LUCENE-2662.patch,
LUCENE-2662.patch
>
>
> This issue will have the BytesHash separated out from LUCENE-2186

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