Zoltán Borók-Nagy created IMPALA-15032:
------------------------------------------
Summary: Load Deletion Vectors in parallel in IcebergDeleteBuilder
Key: IMPALA-15032
URL: https://issues.apache.org/jira/browse/IMPALA-15032
Project: IMPALA
Issue Type: Improvement
Reporter: Zoltán Borók-Nagy
IcebergDeleteBuilder loads Deletion Vectors sequentially during Prepare(), in a
single thread.
Doing so it can block scan operators. We could use MT_DOP threads to load the
DVs, or we could have a dynamic-sized thread pool with number of blocked
workers (the builder doesn't necessarily block workers as they might scan data
files without deletes).
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
