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https://issues.apache.org/jira/browse/LUCENE-6743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14703650#comment-14703650
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Mark Miller commented on LUCENE-6743:
-------------------------------------
artifact-lock-nio is only in Ivy 2.4.0, so this leaves the default. You can use
nio with build.properties though:
ivy.bootstrap.version=2.4.0
ivy_checksum_sha1=5abe4c24bbe992a9ac07ca563d5bd3e8d569e9ed
ivy.lock-strategy=artifact-lock-nio
> Allow Ivy lockStrategy to be overridden by system property.
> -----------------------------------------------------------
>
> Key: LUCENE-6743
> URL: https://issues.apache.org/jira/browse/LUCENE-6743
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Mark Miller
> Assignee: Mark Miller
> Priority: Minor
> Fix For: Trunk, 5.4
>
> Attachments: LUCENE-6743.patch
>
>
> The current hard code lock strategy is imperfect and can fail under parallel
> load. With Ivy 2.4 there is a better option in artifact-lock-nio. We should
> allow the lock strategy to be overrideen like the resolutionCacheDir.
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