bowenli86 commented on issue #10380: [FLINK-14662]Distinguish unknown CatalogTableStatistics and zero URL: https://github.com/apache/flink/pull/10380#issuecomment-561036955 > My guess would be this is not the case with unknown table stats, but indeed have table stats that shows the row count is 0. > @zjuwangg please double check this. that comes down to how to define `unknown` table stats. From my perspective, value of the unknown table stats is the initial default value, which remains unchanged before running any `analyze` commands. E.g. if we just append rows or partitions to a table in Hive, `totalSize=0, numRows=0, rawDataSize=0` would remain unchanged. and have we checked how Hive behaves when having `totalSize=-1, numRows=-1, rawDataSize=-1`?
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