X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/5be901f5813fe9d026e2aa2a6a65d4ea4da4a001..dcdf385b2852acf95f41e2340d07cd68cb34e371:/services/api/db/migrate/20170706141334_json_collection_properties.rb

diff --git a/services/api/db/migrate/20170706141334_json_collection_properties.rb b/services/api/db/migrate/20170706141334_json_collection_properties.rb
index 55ab0df4dd..1c78b53be3 100644
--- a/services/api/db/migrate/20170706141334_json_collection_properties.rb
+++ b/services/api/db/migrate/20170706141334_json_collection_properties.rb
@@ -1,7 +1,14 @@
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
 require './db/migrate/20161213172944_full_text_search_indexes'
 
-class JsonCollectionProperties < ActiveRecord::Migration
+class JsonCollectionProperties < ActiveRecord::Migration[4.2]
   def up
+    # Drop the FT index before changing column type to avoid
+    # "PG::DatatypeMismatch: ERROR: COALESCE types jsonb and text
+    # cannot be matched".
     ActiveRecord::Base.connection.execute 'DROP INDEX IF EXISTS collections_full_text_search_idx'
     ActiveRecord::Base.connection.execute 'ALTER TABLE collections ALTER COLUMN properties TYPE jsonb USING properties::jsonb'
     FullTextSearchIndexes.new.replace_index('collections')