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luoyuxia commented on FLINK-29703: ---------------------------------- The reason is the hive function unix_timestamp will call `SessionState.get().getQueryCurrentTimestamp()` in runtime. But the SessionState.get() will return null since the SessionState will be closed in Flink. Considering `SessionState.get().getQueryCurrentTimestamp()` is actually a fixed value set in query parse phase. To fix it, we need to convert the function call `unix_timestamp` to literal instead of evaluting in runtime siince the value has no difference between convert it to a literal and evaluating it in runtime. > Fail to call unix_timestamp in runtime in Hive dialect > -------------------------------------------------------- > > Key: FLINK-29703 > URL: https://issues.apache.org/jira/browse/FLINK-29703 > Project: Flink > Issue Type: Bug > Components: Connectors / Hive > Reporter: luoyuxia > Priority: Major > -- This message was sent by Atlassian Jira (v8.20.10#820010)