[ https://issues.apache.org/jira/browse/IMPALA-7853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on IMPALA-7853 started by Csaba Ringhofer. ----------------------------------------------- > Add support to read int64 NANO timestamps to the parquet scanner > ---------------------------------------------------------------- > > Key: IMPALA-7853 > URL: https://issues.apache.org/jira/browse/IMPALA-7853 > Project: IMPALA > Issue Type: Improvement > Components: Backend > Reporter: Csaba Ringhofer > Assignee: Csaba Ringhofer > Priority: Major > > PARQUET-1387 added int64 timestamps with nanosecond precision. > As 64 bits are not enough to represent the whole 1400..9999 range of Impala > timestamps, so this new new type works with a limited range: > 1677-09-21 00:12:43.145224192 .. 2262-04-11 23:47:16.854775807 UTC > The benefit of the reduced range is that no validation is necessary during > scanning, as every possible 64 bit value represents a valid timestamp in > Impala. This may mean that this has the potential be the fastest way to store > timestamps. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org