[ https://issues.apache.org/jira/browse/IMPALA-9176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tim Armstrong reassigned IMPALA-9176: ------------------------------------- Assignee: Tim Armstrong > Make access to null-aware partition from PartitionedHashJoinNode read-only > -------------------------------------------------------------------------- > > Key: IMPALA-9176 > URL: https://issues.apache.org/jira/browse/IMPALA-9176 > Project: IMPALA > Issue Type: Improvement > Components: Backend > Reporter: Tim Armstrong > Assignee: Tim Armstrong > Priority: Major > Labels: multithreading > > Currently the accesses to null_aware_partition() are logically read-only > (since the rows and other state is not mutated) and only accesses the build > row when pinned, but is implemented using the built-in read iterator of > BufferedTupleStream. This would prevent sharing of the build side for > null-aware anti-join. > We need to either allow multiple read iterators for a pinned stream, or build > an auxiliary structure, e.g. an array of Tuple ptrs or FlatRowPtr. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org