[TRAFODION-2207] Phenomenon of odb copy with parameter parallel is not consistent with the document description

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: db-utility-odb
• Assignee: Unassigned
• Reporter: zhangliang
• Created: 06/Sep/16 03:46
• Updated: 30/Sep/17 06:48

Description

As the odb user guide ODB user guide.pdf says
"odb uses as many threads as the parallel argument to extract data from
partitioned source tables PLUS an equivalent number of threads to
write to the target table."
It mean if parallel is 4, odb will start 8 thread, 4 for extract and 4 for load.
But in practice, odb will start triple threads of parameter parallel if not limit with -T. It is not consistent with document.
Maybe we should update our document.