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https://issues.apache.org/jira/browse/HBASE-12329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Hsieh updated HBASE-12329:
-----------------------------------
Release Note: Tables created with duplicate column family names use to
succeed silently. This removes fix removes ambiguity and will change the
behavior of code that depended upon this behavior. Instead of just using
addFamil, a change to the CF definition now requires a modifyFamily call.
> 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
> Assignee: Jingcheng Du
> Priority: Minor
> Fix For: 2.0.0, 0.99.2
>
> Attachments: HBASE-12329-V2.diff, HBASE-12329-V3.diff,
> HBASE-12329.diff
>
>
> 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
> {code}
> 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
> {code}
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