etseidl commented on issue #7909: URL: https://github.com/apache/arrow-rs/issues/7909#issuecomment-3070546348
IIRC, this is actually a limitation of the rust thrift generator. An undefined union field will panic. It used to have a similar problem with undefined enum values, but that was fixed (see https://issues.apache.org/jira/browse/THRIFT-5314?page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel&focusedCommentId=17235158). I was struggling with this while trying to implement a new sort order for floats (#7408). Files written with the new sort order would panic while trying to parse the thrift. I guess we could bring this up with the thrift devs, but also adds ammunition to writing our own thrift parsing (this was brought up in https://www.influxdata.com/blog/how-good-parquet-wide-tables/) cc @alamb @XiangpengHao -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
