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Performance Issue : Create DELTA table form 2 TB PARQUET file
We are trying to create a DELTA table (CTAS statement) from 2 TB PARQUET file and its taking huge amount of time around 12~ hrs.is it normal.? What are option to tune/optimize this ? are we doing anything wrongCluster : Interactive/30 Cores / 320 GB ...
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Please use COPY INTO (first create an empty delta table) or CONVERT TO DELTA instead of CTAS it will be much more faster, and it process will be auto-optimized.
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- 5402 Views
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Resolved! Data Engineering - CTAS - External Tables - Limitations of CTAS for external tables - can or cannot use options and location
Data Engineering - CTAS - External TablesCan someone help me understand why In chapter 3.3, we cannot not directly use CTAS with OPTIONS and LOCATION to specify delimiter and location of CSV?Or I misunderstood?Details:In Data Engineering with Databri...
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The 2nd statement CTAS will not be able to parse the csv in any manner because it's just the from statement that points to a file. It's more of a traditional SQL statement with select and from. It will create a Delta Table. This just happens to b...
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