Updated September 12th, 2024 by Ravivarma S
Handling Data Duplication Issues with Databricks Autoloader and Delta Lake using replaceWhere
Problem When using replaceWhere during data ingestion to overwrite specific data partitions in a Delta table, you notice that new data are appended to, instead of replacing, old data, causing duplicates. Cause The replaceWhere option is intended to be used during the write operation, not the read operation. When used during the read operation,...
0 min reading timeUpdated September 12th, 2024 by Ravivarma S
Unable to read Delta table with deletion vectors
Problem You receive an error when trying to read a Delta table. java.lang.RuntimeException: Unable to read this table because it requires reader table feature(s) that is unsupported by this version of Databricks: deletionVectors. Cause Delta tables with deletion vectors enabled can only be queried using clusters with Databricks Runtime 12.2 LTS - 1...
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