Github user zellerh commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/794#discussion_r85455619
--- Diff: core/sql/executor/ExHdfsScan.cpp ---
@@ -1700,6 +1714,138 @@ char *
ExHdfsScanTcb::extractAndTransformAsciiSourceToSqlRow(int &err,
return NULL;
}
+void ExHdfsScanTcb::computeRangesAtRuntime()
--- End diff --
Yes, but doing so would be quite complex, since we would have to send the
data to the EPSs. Your proposal is somewhat related to Dave's proposal to
generate the temp table name at runtime - this would also require sending
information to the ESPs. So, maybe we can consider both of those together.
Because of the security holes with Hive tables, however, I'm wondering whether
we should try volatile tables first before making the Hive table solution
better.
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