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https://issues.apache.org/jira/browse/IMPALA-11954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17694634#comment-17694634
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Gabor Kaszab commented on IMPALA-11954:
---------------------------------------
Apparently, the issue is not with the following line from the link in the
description:
{code:java}
String[] partitions = path.split("/", -1);
{code}
Here, the path is escaped, so it actually contains partition values in the
format of "12%2F31%2F10" instead of "12/31/10". The problem is that this
escaped format is also written into the partition metrics and when planFiles()
does the filtering it won't match the non-escaped version of the value.
> Partition an Iceberg table on a string col with '/' char gives incorrect
> results
> --------------------------------------------------------------------------------
>
> Key: IMPALA-11954
> URL: https://issues.apache.org/jira/browse/IMPALA-11954
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 4.0.0
> Reporter: Gabor Kaszab
> Priority: Blocker
> Labels: correctness, impala-iceberg
>
> Repro:
> {code:java}
> CREATE TABLE IF NOT EXISTS tmp_ice
> (id int, date_string_col string)
> PARTITIONED BY SPEC (date_string_col)
> STORED AS ICEBERG;
> insert into tmp_ice select id, date_string_col from
> functional_parquet.alltypes;
> select * from tmp_ice where date_string_col = "09/01/09";
> {code}
> This select gives zero rows.
> However, I create the table partitioned by another col, e.g. 'id' then the
> very same select gives 10 rows as expected.
> The issue may be somewhere here where we split the path by '/' char:
> https://github.com/apache/impala/blob/47c71bbb32d34d4583856af227206934b6f15136/fe/src/main/java/org/apache/impala/util/IcebergUtil.java#L693
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