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Date: Thu, 23 Oct 2014 15:07:33 +0000 (UTC)
From: "Sean Busbey (JIRA)" <jira@apache.org>
To: dev@hbase.apache.org
Message-ID: <JIRA.12750084.1414076813000.323145.1414076853792@Atlassian.JIRA>
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 <JIRA.12750084.1414076813603@arcas>
Subject: [jira] [Created] (HBASE-12329) Table create with duplicate column
 family names quietly succeeds
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Sean Busbey created HBASE-12329:
-----------------------------------

             Summary: Table create with duplicate column family names quietly succeeds
                 Key: HBASE-12329
                 URL: https://issues.apache.org/jira/browse/HBASE-12329
             Project: HBase
          Issue Type: Bug
          Components: Client, shell
            Reporter: Sean Busbey
            Priority: Minor


>From the mailing list

{quote}
I was expecting that it is forbidden, **but** this call does not throw any
exception
{code}
        String[] families = {"cf", "cf"};
        HTableDescriptor desc = new HTableDescriptor(name);
        for (String cf : families) {
          HColumnDescriptor coldef = new HColumnDescriptor(cf);
          desc.addFamily(coldef);
        }
        try {
            admin.createTable(desc);
        } catch (TableExistsException e) {
            throw new IOException("table \'" + name + "\' already exists");
        }
{code}
{quote}

And Ted's follow up replicates in the shell
{quote}
hbase(main):001:0> create 't2', {NAME => 'f1'}, {NAME => 'f1'}

The table got created - with 1 column family:

hbase(main):002:0> describe 't2'
DESCRIPTION
                       ENABLED
 't2', {NAME => 'f1', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW',
REPLICATION_SCOPE => '0 true
 ', VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL =>
'2147483647', KEEP_DELETED
 _CELLS => 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE
=> 'true'}
1 row(s) in 0.1000 seconds
{quote}


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