Navis created TAJO-1532:
---------------------------
Summary: Multiple ExternalSortExec in an execution block can
induce OOM
Key: TAJO-1532
URL: https://issues.apache.org/jira/browse/TAJO-1532
Project: Tajo
Issue Type: Bug
Reporter: Navis
Assignee: Navis
Doing TAJO-1511, OOM is occurred some queries. With some investigation, I've
found each ExternalSortExec can consume up to EXTSORT_BUFFER_SIZE but when
multiple ExternalSortExec exist in an execution block, this causes OOM. And
also, memory scanners keeps rows until close is called but in most cases,
rescan is not used and can be safely discarded after iteration is finished.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
