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https://issues.apache.org/jira/browse/LUCENE-510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12580797#action_12580797
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Hiroaki Kawai commented on LUCENE-510:
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Ah interesting !
I'm not tried yet, but...
CharBuffer cb = ByteBuffer.allocateDirect(5000).asCharBuffer();
ByteBuffer bb = ByteBuffer.allocateDirect(5000);
will improve the performance.
> IndexOutput.writeString() should write length in bytes
> ------------------------------------------------------
>
> Key: LUCENE-510
> URL: https://issues.apache.org/jira/browse/LUCENE-510
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Store
> Affects Versions: 2.1
> Reporter: Doug Cutting
> Assignee: Michael McCandless
> Attachments: LUCENE-510.patch, LUCENE-510.take2.patch,
> SortExternal.java, strings.diff, TestSortExternal.java
>
>
> We should change the format of strings written to indexes so that the length
> of the string is in bytes, not Java characters. This issue has been
> discussed at:
> http://www.mail-archive.com/java-dev@lucene.apache.org/msg01970.html
> We must increment the file format number to indicate this change. At least
> the format number in the segments file should change.
> I'm targetting this for 2.1, i.e., we shouldn't commit it to trunk until
> after 2.0 is released, to minimize incompatible changes between 1.9 and 2.0
> (other than removal of deprecated features).
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