Sandhya Sundaresan created TRAFODION-3192: ---------------------------------------------
Summary: UNION ALL up and down queue size default value too small, or not dynamically adjusted Key: TRAFODION-3192 URL: https://issues.apache.org/jira/browse/TRAFODION-3192 Project: Apache Trafodion Issue Type: Bug Components: sql-exe Affects Versions: any Reporter: Sandhya Sundaresan Assignee: Sandhya Sundaresan Fix For: 2.4 The union up queue size is hardcoded in nadefaults.cpp as a start value as 16 which is very low if large number of rows are being returned. Scan operator has it set to 2048. Some operators further adjust this up size from the original value based on estimate of the number of rows being returned. We can do that for union codegen method and also change the original up queue size to 2048. Noticed that Transpose, Sequence also have the same issue and dynamic queue resizing is missing. -- This message was sent by Atlassian JIRA (v7.6.3#76005)