[jira] [Commented] (LUCENENET-541) Performance issue with IOException in FastCharStream.

["Prescott Nasser (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENENET-541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14013231#comment-14013231 ] 

Prescott Nasser commented on LUCENENET-541:
-------------------------------------------

Chris - 

I was reviewing this pull request and I have a question. You've removed all the Try/Catch blocks but it doesn't look like any of the logic was changed. IE if the IOException is thrown in FastCharStream.Refill, it'll bubble up the stack instead of being handled.

I think I'm missing something - either how you handled this differently or why that's not important, in either case could you add some detail around the changes you made and how you handle that.

> Performance issue with IOException in FastCharStream.
> -----------------------------------------------------
>
>                 Key: LUCENENET-541
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-541
>             Project: Lucene.Net
>          Issue Type: Improvement
>          Components: Lucene.Net Core
>    Affects Versions: Lucene.Net 3.0.3, Lucene.Net 3.6, Lucene.Net 4.0
>            Reporter: Christopher Haws
>            Priority: Minor
>              Labels: performance
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> The Refill() method of the FastCharStream class contains logic based on an IOException being thrown. This logic degrades the performance of every query by about 10x from my testing.



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