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Lukas Masuch commented on ARROW-5356: ------------------------------------- I'm also running into the same problem ('Unrecognized type: "Duration" (18)'). Looking into the code, it seems that the Duration type is only partially implemented in javascript/typescript. For example, it fails to decode the duration type because it is missing in this switch case: [https://github.com/apache/arrow/blob/apache-arrow-9.0.0.dev/js/src/ipc/metadata/message.ts#L440] Not sure if this is intentional, a bug, or just not implemented yet? > [JS] Implement Duration type, integration test support for Interval and > Duration types > -------------------------------------------------------------------------------------- > > Key: ARROW-5356 > URL: https://issues.apache.org/jira/browse/ARROW-5356 > Project: Apache Arrow > Issue Type: Improvement > Components: JavaScript > Reporter: Wes McKinney > Assignee: Brian Hulette > Priority: Major > > Follow on work to ARROW-835 -- This message was sent by Atlassian Jira (v8.20.7#820007)