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https://issues.apache.org/jira/browse/IMPALA-11662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Li Penglin reassigned IMPALA-11662:
-----------------------------------
Assignee: Li Penglin
> Improve "refresh iceberg_tbl_on_oss;" performance
> -------------------------------------------------
>
> Key: IMPALA-11662
> URL: https://issues.apache.org/jira/browse/IMPALA-11662
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Li Penglin
> Assignee: Li Penglin
> Priority: Major
> Labels: impala-iceberg
>
> Since Iceberg provides rich metadata, the cost of directory listing on OSS
> service e.g. S3A is higher than the cost on HDFS, we could create the file
> descriptors from Iceberg metadata instead of using
> org.apache.hadoop.fs.FileSystem#listFiles.
> https://github.com/apache/impala/blob/master/fe/src/main/java/org/apache/impala/catalog/FileMetadataLoader.java#L189.
> The only thing missing there is the last_modification_time of the files. But
> since Iceberg files are immutable, maybe we could just come up with a special
> timestamp for these files.
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