YQL fails hard with 1000+ tables in range
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Description
When attempting to run a query over 1000+ tables, the query fails with an error:
Operation has failed to initialize"; ... "inner_errors"=[{"code"=1;"message"="Too many input tables: maximum allowed 1000, actual 2347
Expected behavior:
the tables are pre-merged into anonymous tables in groups of 1000, and then fed into the query. The documentation suggests that this should be the behavior (with loss of the TablePath() attribute):
https://ytsaurus.tech/docs/en/yql/builtins/basic#tablepath
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