Ke Han created CASSANDRA-18628: ---------------------------------- Summary: Handle special column name when upgrading from 2.2.19 to 3.0.29/3.11.15 Key: CASSANDRA-18628 URL: https://issues.apache.org/jira/browse/CASSANDRA-18628 Project: Cassandra Issue Type: Bug Components: CQL/Interpreter Reporter: Ke Han
When I was migrating from 2.2.19 to 3.0.29/3.11.15, I noticed some of my columns could not be accessed because of the syntax problem. I had a column named "Is" in the 2.x. However, after the upgrade process, when I try to perform the same select command, it throws an exception since "Is" will be interpreted separately. I observed this after my cluster was fully upgraded. I cannot downgrade it back to 2.2.19. I cannot rename this column directly either. h2. Steps to reproduce Execute the following commands in Cassandra-2.2.19 (single node) {code:java} CREATE KEYSPACE ks WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 2 }; CREATE TABLE IF NOT EXISTS ks.tb (c1 INT,c2 INT,c3 TEXT,rJr INT,c4 TEXT,c5 TEXT,ds INT, Is INT, PRIMARY KEY (c2, c5, c3, rJr, Is, c1, ds, c4 )); SELECT c2, ds, Is, c4 FROM ks.tb WHERE c2 = 1566089765 AND c5 = 'teststring1' AND c3 = 'teststring2' AND rJr = -1012111692; c2 | ds | is | c4 ----+----+----+---- (0 rows){code} Then perform an upgrade to Cassandra-3.0.29/Cassandra-3.11.15 {code:java} // Do the same select SELECT c2, ds, Is, c4 FROM ks.tb WHERE c2 = 1566089765 AND c5 = 'teststring1' AND c3 = 'teststring2' AND rJr = -1012111692; SyntaxException: line 1:15 no viable alternative at input 'Is' (SELECT c2, ds, [Is]...){code} This column still exists in the table, but I cannot access it. I am wondering whether I can directly rename it in the new version or get some prompts telling me to rename is before the upgrade process. "Is" is also not marked as a reserved word in the [CQL Keywords doc|https://docs.datastax.com/en/cql-oss/3.3/cql/cql_reference/keywords_r.html]). -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org