[jira] Commented: (LUCENE-821) single norm file still uses up descriptors

["Yonik Seeley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12477676 ] 

Yonik Seeley commented on LUCENE-821:
-------------------------------------

> - removed extra IndexInput clone() when reading the norms... why was this there originally? 

Going back to the original SegmentReader implementation (2001), getNorms() wasn't synchronized, hence the clone of IndexInput was needed.

> single norm file still uses up descriptors
> ------------------------------------------
>
>                 Key: LUCENE-821
>                 URL: https://issues.apache.org/jira/browse/LUCENE-821
>             Project: Lucene - Java
>          Issue Type: Bug
>            Reporter: Yonik Seeley
>         Assigned To: Yonik Seeley
>         Attachments: norms.patch
>
>
> The new index file format with a single .nrm file for all norms does not decrease file descriptor usage.
> The .nrm file is opened once for each field with norms in the index segment.

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