[IMPALA-3949] CatalogServiceCatalog.extractFunctions should log the underlying exception when failing to load a function

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.7.0, Impala 2.6.3
• Fix Version/s: Impala 2.5.5, Impala 2.8.0
• Component/s: Catalog
• Labels: ramp-up supportability usability
• Target Version: Impala 2.8.0
• Assignee: Bharath Vissapragada
• Reporter: Balazs Jeszenszky
• Created: 04/Aug/16 11:46
• Updated: 15/Nov/16 13:05
• Resolved: 13/Sep/16 21:54

Description

The code path here:
https://github.com/cloudera/Impala/blob/cdh5-trunk/fe/src/main/java/com/cloudera/impala/catalog/CatalogServiceCatalog.java#L437-L442
does not log the reason for failure to copy. Looks like
https://github.com/cloudera/Impala/blob/cdh5-trunk/fe/src/main/java/com/cloudera/impala/common/FileSystemUtil.java#L374-L382
swallows the exception. This makes it harder to find root cause.