zztttt commented on issue #4072: URL: https://github.com/apache/hudi/issues/4072#issuecomment-990568201
> ``` > Caused by: ERROR XSDB6: Another instance of Derby may have already booted the database /home/zzt/code/spark-debug/metastore_db. > ``` > > guess you already have another instance of derby running, i.e. another spark-shell running and trying to write to hudi or something. Thanks for your help! I still meet this problem when I want to store the metadata in Hivemetastore by the derby database approach. I address this problem by using the relational database approach of Hivemetastore, and it really works several days ago. I can ensure that there is only one sparkSession instance running in the project, and before I start the project, I delete the metadata_db directory every time, but this doesn't work. It's confusing so I use another storage backend instead. -- 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: commits-unsubscr...@hudi.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
