[fix](Nereids) make TVF's distribution spec always be RANDOM #24020
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| // when we set numbers to gather, coordinator could not process and set none scan range in thrift | ||
| // so we add this test case to ensure this sql do not core dump | ||
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what is the purpose of this sql?
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Nereids make TVF number as Gather distribution if backend num = 1. But coordinator could not process gather fragment with scan node. In the long run, we need to get coordinators to support this scenario. But it is need a lot of refactor. So, we just forbid Gather distribution for ScanNode now.
Proposed changes
Issue Number: close #xxx
Nereids make TVF number as Gather distribution if backend num = 1.
But coordinator could not process gather fragment with scan node.
In the long run, we need to get coordinators to support this scenario.
But it is need a lot of refactor. So, we just forbid Gather
distribution for ScanNode now.
Further comments
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