Create table after failure

[Alexander Chudnovets]

If there is some errors during create table process, next request with same table name fails.

Steps to reproduce:
1. Try to create table in nonexistent keyspace (bug https://bugs.launchpad.net/magnetodb/+bug/1295077)
2. Create keyspace
3. Try to create the table with the same name

Expected response: 200 with table info
Real response:
{
    "explanation": "The server could not comply with the request since it is either malformed or otherwise incorrect.",
    "code": 400,
    "error": {
        "message": "Table 'Thread' already exists",
        "traceback": null,
        "type": "TableAlreadyExistsException"
    },
    "title": "Bad Request"
}

And the table with specified name is absent in Cassandra.

[Alexander Chudnovets (achudnovets)]

I believe it may be connected with new table schema: some info about new tables is inserted in the magnetodb.table_info table. If create table command fails the record about failed table remains in the magnetodb.table_info table.

[Dmitriy Ukhlov (dukhlov)]

Sorry, but now we don't have recovery after fail functionality. If we try to get access to the keyspace but it isn't exist, it means that magnetodb is not configured properly. I guess now ew can only provide validation - is this tenant configured for magnetodb usage or not and reject request if it isn't

[Dmitriy Ukhlov (dukhlov)]

now we have merged patch for automatic creation of keyspace if it is needed so this problem is not actual