Marcelo Vanzin created SPARK-16119:
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Summary: Support "DROP TABLE ... PURGE" if Hive client supports it
Key: SPARK-16119
URL: https://issues.apache.org/jira/browse/SPARK-16119
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.0.0
Reporter: Marcelo Vanzin
There's currently code that explicitly disables the "PURGE" flag when dropping
a table:
{code}
if (ctx.PURGE != null) {
throw operationNotAllowed("DROP TABLE ... PURGE", ctx)
}
{code}
That flag is necessary in certain situations where the table data cannot be
moved to the trash (which will be tried unless "PURGE" is requested). If the
client supports it (Hive >= 0.14.0 according to the Hive docs), we should allow
that option to be defined.
For non-Hive tables, as far as I can understand, "PURGE" is the current
behavior of Spark.
The same limitation exists currently for "ALTER TABLE ... DROP PARTITION" so
should probably be covered.
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