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https://issues.apache.org/jira/browse/PIG-2453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13178258#comment-13178258
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Dmitriy V. Ryaboy commented on PIG-2453:
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One proposed solution is to only check for .pig_schema files on a per-directory
level instead of per-file. We can also probably do fewer NN calls by caching
all found schema files and not checking metaFilePath.exists() redundantly.
> Fetching schema can be very slow for multi-thousand LOADs
> ---------------------------------------------------------
>
> Key: PIG-2453
> URL: https://issues.apache.org/jira/browse/PIG-2453
> Project: Pig
> Issue Type: Bug
> Reporter: Dmitriy V. Ryaboy
> Assignee: Dmitriy V. Ryaboy
>
> When a user tries to load resources with thousands of files using PigStorage,
> we spend an inordinate amount of time looking for schema files. This is
> because we check for a schema file per loaded file.
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