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[GLUTEN-12863][CH][TEST] Record why four ClickHouse exclusions exist on Spark 3.5 #12889

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LuciferYang wants to merge 3 commits into from
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[GLUTEN-12863][CH][TEST] Record why four ClickHouse exclusions exist on Spark 3.5 #12889

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1d41190
test: re-enable three ClickHouse cast cases on Spark 3.5
LuciferYang Aug 25, 2026
b7cdc6b
test: also re-enable tanh on ClickHouse Spark 3.5
LuciferYang Aug 25, 2026
79ffee1
test: restore the four ClickHouse exclusions with the reasons CI repo…
LuciferYang Aug 25, 2026
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8 changes: 8 additions & 0 deletions ...ut/spark35/src/test/scala/org/apache/gluten/utils/clickhouse/ClickHouseTestSettings.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -1180,6 +1180,8 @@ class ClickHouseTestSettings extends BackendTestSettings {
enableSuite[GlutenMathExpressionsSuite]
// Spark round UT for round(3.1415,3) is not correct.
.exclude("round/bround/floor/ceil")
// ClickHouse's tanh differs from Spark's at the sixth significant digit:
// TANH(-0.1) returns -0.0996695958408681, the case expects -0.09966799462495582.
Comment on lines +1183 to +1184
.excludeCH("tanh")
.excludeCH("unhex")
.excludeCH("atan2")
Expand Down Expand Up @@ -2195,8 +2197,14 @@ class ClickHouseTestSettings extends BackendTestSettings {
.excludeCH("cast from timestamp II")
.excludeCH("cast a timestamp before the epoch 1970-01-01 00:00:00Z II")
.excludeCH("cast a timestamp before the epoch 1970-01-01 00:00:00Z")
// ClickHouse throws instead of yielding null: try_cast([123,true,f] as
// array<boolean>) fails with an exception.
.excludeCH("cast from array II")
// TRY-mode overflow inside a complex type wraps instead of yielding null on
// ClickHouse: try_cast([2.147483648E9] as array<int>) returns [-2147483648].
.excludeCH("cast from array III")
// Same as "cast from array III": try_cast([2.147483648E9] as struct<a:int>)
// returns [-2147483648] on ClickHouse.
.excludeCH("cast from struct III")
.excludeCH("ANSI mode: cast string to timestamp with parse error")
.excludeCH("ANSI mode: cast string to date with parse error")
Expand Down
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