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https://issues.apache.org/jira/browse/LUCENE-2446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13955141#comment-13955141
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Uwe Schindler commented on LUCENE-2446:
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bq. Is CRC32 intrinsic available and the same on all relevant platforms ?
Does not matter what the JVM does internally. The public API for CRC32 is there
in the java.util.zip package and we use it since the early beginning of Lucene.
If it would be suddenly return incorrect/different results, it would violate
ZIP spec (which is indirectly an ISO standard - through OpenDocument ISO
standard).
> Add checksums to Lucene segment files
> -------------------------------------
>
> Key: LUCENE-2446
> URL: https://issues.apache.org/jira/browse/LUCENE-2446
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Lance Norskog
> Labels: checksum
> Attachments: LUCENE-2446.patch
>
>
> It would be useful for the different files in a Lucene index to include
> checksums. This would make it easy to spot corruption while copying index
> files around; the various cloud efforts assume many more data-copying
> operations than older single-index implementations.
> This feature might be much easier to implement if all index files are created
> in a sequential fashion. This issue therefore depends on [LUCENE-2373].
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