[CASSANDRA-12174] COPY FROM should raise error for non-existing input files

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 3.10
• Component/s: Legacy/Tools
• Labels: cqlsh lhf
• Assignee: Hiroyuki Nishi
• Reporter: Stefan Podkowinski

Authors

Hiroyuki Nishi

Reviewers

Stefania Alborghetti

• Created: 12/Jul/16 13:23
• Updated: 16/Apr/19 09:30
• Resolved: 27/Jul/16 04:29

Description

Currently the CSV COPY FROM command will not raise any error for non-existing paths. Instead only "0 rows imported" will be shown as result.

As the COPY FROM command is often used for tutorials and getting started guides, I'd suggest to give a clear error message in case of a missing input file. Without such error it can be confusing for the user to see the command actually finish, without any clues why no rows have been imported.

CREATE KEYSPACE test
  WITH REPLICATION = { 'class' : 'NetworkTopologyStrategy', 'datacenter1' : 1 };

USE test;

CREATE TABLE airplanes (
  name text PRIMARY KEY,
  manufacturer ascii,
  year int,
  mach float
);

COPY airplanes (name, manufacturer, year, mach) FROM '/tmp/1234-doesnotexist';
Using 3 child processes

Starting copy of test.airplanes with columns [name, manufacturer, year, mach].
Processed: 0 rows; Rate:       0 rows/s; Avg. rate:       0 rows/s
0 rows imported from 0 files in 0.216 seconds (0 skipped).