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avoid to read whole hive table when spark load from hive table #5047

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merged 1 commit into from
Dec 15, 2020
Merged

avoid to read whole hive table when spark load from hive table #5047

merged 1 commit into from
Dec 15, 2020

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Dam1029
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@Dam1029 Dam1029 commented Dec 9, 2020

Proposed changes

  • When we use spark load from hive table,the function loadDataFromHiveTable will read whole hive table and then filter the data in process(),if hive table have lots of partitions and history data,the load will be cost too much time and resource. So we can do filter work in loadDataFromHiveTable function when read from hive table.

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LGTM

@morningman morningman added approved Indicates a PR has been approved by one committer. area/spark-load Issues or PRs related to the spark load kind/improvement labels Dec 14, 2020
@morningman morningman merged commit 834834d into apache:master Dec 15, 2020
morningman pushed a commit to baidu-doris/incubator-doris that referenced this pull request Jan 5, 2021
…he#5047)

When we use spark load from hive table, the function loadDataFromHiveTable
will read whole hive table and then filter the data in process()
if hive table have lots of partitions and history data,the load will be cost too much time and resource.
So we can do filter work in loadDataFromHiveTable function when read from hive table.
Co-authored-by: 杜安明 <anming.du@mihoyo.com>
@yangzhg yangzhg mentioned this pull request Feb 9, 2021
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2 participants