cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Tyler Patterson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-5096) Transient schema disagreement error while under high concurrency
Date Tue, 01 Jan 2013 09:42:12 GMT
Tyler Patterson created CASSANDRA-5096:
------------------------------------------

             Summary: Transient schema disagreement error while under high concurrency
                 Key: CASSANDRA-5096
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5096
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 1.1.8
         Environment: ccm, dtest, ubuntu, C*1.1 (commit 8a3b291)
            Reporter: Tyler Patterson


To duplicate:
 - Create a 4-node cluster
 - Create 4 threads, then create keyspaces or columnfamilies as fast as possible from each
thread
 - You will usually get an error "Schema versions disagree, (try again later)"
 - Here is example code to duplicate the issue: https://github.com/tpatterson/cassandra-dtest/commit/f1fee7ef4296de5cb9e346568ba39123104b5f87

Notes: 
 - Hamilton originally found this error while testing solr: https://datastax.jira.com/browse/DSP-1323
 - No errors were observed in the log of any of the nodes
 - The schemas do not disagree after the failure

Exception:
{code}
======================================================================
ERROR: apply changes to many nodes concurrently.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/home/automaton/cassandra-dtest/tools.py", line 206, in wrapped
    f(obj)
  File "/home/automaton/cassandra-dtest/concurrent_schema_changes_test.py", line 398, in inner_func
    self.create_ks(cursor, ks_name, node_num)
  File "/home/automaton/cassandra-dtest/dtest.py", line 191, in create_ks
    cursor.execute(query % (name, 'SimpleStrategy', 'strategy_options:replication_factor=%d'
% rf))
  File "/usr/local/lib/python2.7/dist-packages/cql/cursor.py", line 80, in execute
    response = self.get_response(prepared_q, cl)
  File "/usr/local/lib/python2.7/dist-packages/cql/thrifteries.py", line 80, in get_response
    return self.handle_cql_execution_errors(doquery, compressed_q, compress)
  File "/usr/local/lib/python2.7/dist-packages/cql/thrifteries.py", line 100, in handle_cql_execution_errors
    raise cql.IntegrityError("Schema versions disagree, (try again later).")
IntegrityError: Schema versions disagree, (try again later).
{code}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message