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https://issues.apache.org/jira/browse/LUCENE-1720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12725176#action_12725176
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Mark Harwood commented on LUCENE-1720:
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bq. Oh, I did not mean to skip this check.
But the check is on a variable with a yes/no state. We need to cater for >1
simultaneous timeout error condition in play. With only a boolean it could be
hard to know precisely when to clear it, no?
bq. Mark here wanted to provide a much more generalized way of stopping any
other activity, not just search
To be fair I think the use case for IndexWriter is weaker. In reader you have
multiple users all expressing different queries and you want them all to share
nicely with each other. In index writing it's typically a batch system indexing
docs and there's no "fairness" to mediate? Breaking it out into a utility class
seems like a good idea anyway.
> TimeLimitedIndexReader and associated utility class
> ---------------------------------------------------
>
> Key: LUCENE-1720
> URL: https://issues.apache.org/jira/browse/LUCENE-1720
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Index
> Reporter: Mark Harwood
> Assignee: Mark Harwood
> Priority: Minor
> Attachments: ActivityTimedOutException.java,
> ActivityTimeMonitor.java, TestTimeLimitedIndexReader.java,
> TimeLimitedIndexReader.java
>
>
> An alternative to TimeLimitedCollector that has the following advantages:
> 1) Any reader activity can be time-limited rather than just single searches
> e.g. the document retrieve phase.
> 2) Times out faster (i.e. runaway queries such as fuzzies detected quickly
> before last "collect" stage of query processing)
> Uses new utility timeout class that is independent of IndexReader.
> Initial contribution includes a performance test class but not had time as
> yet to work up a formal Junit test.
> TimeLimitedIndexReader is coded as JDK1.5 but can easily be undone.
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