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From "Greg Tarr (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1720) TimeLimitedIndexReader and associated utility class
Date Thu, 07 Oct 2010 15:05:30 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918937#action_12918937
] 

Greg Tarr commented on LUCENE-1720:
-----------------------------------

If I may I'd like to retract my wish for this to be available in the main lucene build pending
further testing on our systems.

There seems to be some code that was available in earlier versions of this patch but removed
from the latest version (2010-02-15). Specifically the TimeLimitingIndexReader.java once had
a method called getSequentialSubReaders(), but this has been removed from the latest commit..

Could someone please explain why this change has been made?

> 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, ActivityTimeMonitor.java,
ActivityTimeMonitor.java, LUCENE-1720.patch, LUCENE-1720.patch, Lucene-1720.patch, Lucene-1720.patch,
LUCENE-1720.patch, TestTimeLimitedIndexReader.java, TestTimeLimitedIndexReader.java, TimeLimitedIndexReader.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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