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https://issues.apache.org/jira/browse/HUDI-1842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17391659#comment-17391659
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sivabalan narayanan commented on HUDI-1842:
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Even with string formatted partition_path, guess the field name getting
prefixed need to be fixed.
{code:java}
select * from hudi_ny where trip_distance = 2.78;
20210802105420 20210802105420_2_4 2019-01-01 00:34:55 2019-01-01
c5e6a617-dfc5-4051-8c1a-8daead3847af-0_2-37-62_20210802105420.parquet 2
2019-01-01 00:34:55 2019-01-01 00:47:05 1 2.78 1 N
48 239 1 12.0 0.5 0.5 1.7 0.0 0.3 15.0
NULL 2019-01-01
20210802112531 20210802112531_1_4 tpep_pickup_datetime:2022-01-01
00:34:55 date_col=2022-01-01
16767b94-3a63-4c0c-9939-dd39be4bd27c-0_1-74-3465_20210802112531.parquet 1
2022-01-01 00:34:55 2022-01-01 00:47:05 1 2.78 1 N
48 239 12.0 0.5 0.5 1.7 0.0 0.3 15.0 NULL
2022-01-01
20210802112531 20210802112531_2_3 tpep_pickup_datetime:2019-01-01
00:34:55 date_col=2019-01-01
8da20c31-296e-4321-800d-0c2b7ee3a82b-0_2-74-3466_20210802112531.parquet 3
2019-01-01 00:34:55 2019-01-01 00:47:05 1 2.78 1 N
48 239 12.0 0.5 0.5 1.7 0.0 0.3 30.0 NULL
2019-01-01
20210802112531 20210802112531_0_2 tpep_pickup_datetime:2021-01-01
00:34:55 date_col=2021-01-01
c5c72f9e-9a63-48ca-a981-4302890f5210-0_0-68-3464_20210802112531.parquet 2
2021-01-01 00:34:55 2021-01-01 00:47:05 1 2.78 1 N
48 239 12.0 0.5 0.5 1.7 0.0 0.3 25.0 NULL
2021-01-01
Time taken: 0.311 seconds, Fetched 4 row(s)
{code}
You can notice two entries as last col (partition path) value as 2019-01-01.
But rows has same record key, but just that, one row was already in hudi table.
and another was added during merge. Ideally it should have been an update and
only one row should have been part of the result.
> [SQL] Spark Sql Support For The Exists Hoodie Table
> ---------------------------------------------------
>
> Key: HUDI-1842
> URL: https://issues.apache.org/jira/browse/HUDI-1842
> Project: Apache Hudi
> Issue Type: Sub-task
> Reporter: pengzhiwei
> Priority: Blocker
> Labels: release-blocker
> Fix For: 0.9.0
>
>
> In order to support spark sql for hoodie, we persist some table properties to
> the hoodie.properties. e.g. primaryKey, preCombineField, partition columns.
> For the exists hoodie tables, these properties are missing. We need do some
> code in UpgradeDowngrade to support spark sql for the exists tables.
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