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https://issues.apache.org/jira/browse/FLINK-40606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-40606:
-----------------------------------
Labels: pull-request-available (was: )
> Casting binary arrays generates invalid Java array allocation
> -------------------------------------------------------------
>
> Key: FLINK-40606
> URL: https://issues.apache.org/jira/browse/FLINK-40606
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 2.4.0
> Reporter: dylanhz
> Priority: Major
> Labels: pull-request-available
>
> Casting an array to {{ARRAY<VARBINARY(1)>}} fails during generated code
> compilation.
> Reproduced on community master ({{e57428cafc9}}, Flink {{2.4-SNAPSHOT}}, Java
> 17):
> {code:sql}
> SELECT event_id,
> CAST(ARRAY[byte_a, byte_b] AS ARRAY<VARBINARY(1)>)
> FROM (VALUES
> ('a', CAST(X'01' AS BYTES), CAST(X'0203' AS BYTES)),
> ('b', CAST(X'0405' AS BYTES), CAST(X'06' AS BYTES))
> ) AS v(event_id, byte_a, byte_b);
> {code}
> *Expected:* Two rows with each binary array element truncated to at most one
> byte.
> *Actual:*
> {noformat}
> CompileException: Line 80, Column 44: '{' expected instead of '['
> {noformat}
> {{ArrayToArrayCastRule}} calls {{CastRuleUtils.newArray()}} with element type
> {{byte[]}}, producing:
> {code:java}
> byte[][] objArray$8 = new byte[][arraySize$7];
> {code}
> The allocation should be {{new byte[arraySize$7][]}}.
> Casting to {{ARRAY<BYTES>}} does not expose this on current master because
> {{IdentityCastRule}} bypasses the element conversion.
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