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https://issues.apache.org/jira/browse/DRILL-7578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17035445#comment-17035445
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ASF GitHub Bot commented on DRILL-7578:
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vvysotskyi commented on issue #1978: DRILL-7578: HDF5 Metadata Queries Fail
with Large Files
URL: https://github.com/apache/drill/pull/1978#issuecomment-585260482
@cgivre, in your previous comment, you have mentioned that when plugin
itself handled projection pushdown, this issue wasn't observed, so I assumed
that it wasn't done by EVF (at least in this case).
Regarding user experience, I doubt that it would be better for user
experience to introduce this config option, it just confuses the user: `SELECT
*` should return all the records, but it will ignore specific column. What
behavior is expected if the user would specify this column explicitly, or if he
would add a filter with this column, or even aggregation?
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> HDF5 Metadata Queries Fail with Large Files
> -------------------------------------------
>
> Key: DRILL-7578
> URL: https://issues.apache.org/jira/browse/DRILL-7578
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.18.0
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Major
> Fix For: 1.18.0
>
>
> With large files, Drill runs out of memory when attempting to project large
> datasets in the metadata.
> This PR adds a configuration option which removes the dataset projection from
> metadata queries and fixes this issue.
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