[SYSTEMDS-1846] Transformapply w/ column names fails with index-out-of-bounds

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemML 0.15
• Assignee: Matthias Boehm
• Reporter: Matthias Boehm
• Created: 17/Aug/17 05:04
• Updated: 09/Sep/17 03:53
• Resolved: 02/Sep/17 23:39

Description

Given a simple transformapply scenario as shown in the following script

spec = "{ids: false, recode: [ zipcode, district, view ]}";
[X, M] = transformencode(target=F, spec=spec);
spec2 = "{ids: false, recode: [ zipcode ]}";
X2 = transformapply(target=F[,1], spec=spec2, meta=M);

currently leads to index out-of-bounds exceptions because the column name zipcode is not found in the column names of the meta data frame. The root cause is a wrong assumption of sorted column names in the underlying implementation.

Issue Links

• relates to: SYSTEMDS-1824 Wrong transformapply output with col name specification and subset of cols