[Enhancement](paimon)support native read paimon top level schema change table. (#48723) #52174
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TPC-H: Total hot run time: 39903 ms |
TPC-DS: Total hot run time: 197340 ms |
ClickBench: Total hot run time: 32.01 s |
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TPC-H: Total hot run time: 39954 ms |
TPC-DS: Total hot run time: 196410 ms |
ClickBench: Total hot run time: 31.34 s |
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…ge table. (apache#48723) Problem Summary: Supports native reader reading tables after the top-level schema of paimon is changed, but does not support tables after the internal schema of struct is changed. change top-level schema(support): ```sql --spark sql ALTER TABLE table_name ADD COLUMNS (c1 INT,c2 STRING); ALTER TABLE table_name RENAME COLUMN c0 TO c1; ALTER TABLE table_name DROP COLUMNS (c1, c2); ALTER TABLE table_name ADD COLUMN c INT FIRST; ALTER TABLE table_name ADD COLUMN c INT AFTER b; ALTER TABLE table_name ALTER COLUMN col_a FIRST; ALTER TABLE table_name ALTER COLUMN col_a AFTER col_b; ``` change internal schema of struct schema(not support, will support in the next PR): ```sql --spark sql ALTER TABLE table_name ADD COLUMN v.value.f3 STRING; ALTER TABLE table_name RENAME COLUMN v.f1 to f100; ALTER TABLE table_name DROP COLUMN v.value.f3 ; ALTER TABLE table_name ALTER COLUMN v.col_a FIRST; ```
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morrySnow
approved these changes
Jun 28, 2025
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bp #48723
What problem does this PR solve?
Problem Summary:
Supports native reader reading tables after the top-level schema of paimon is changed, but does not support tables after the internal schema of struct is changed.
change top-level schema(support):
change internal schema of struct schema(not support, will support in the next PR):
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