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From "Stephen Yuan Jiang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-13711) Provide an API to set min and max versions in
Date Tue, 19 May 2015 08:00:00 GMT
Stephen Yuan Jiang created HBASE-13711:
------------------------------------------

             Summary: Provide an API to set min and max versions in 
                 Key: HBASE-13711
                 URL: https://issues.apache.org/jira/browse/HBASE-13711
             Project: HBase
          Issue Type: Bug
    Affects Versions: 1.1.0, 2.0.0, 1.2.0
            Reporter: Stephen Yuan Jiang
            Assignee: Stephen Yuan Jiang
            Priority: Minor


In org.apache.hadoop.hbase.chaos.actions.ChangeVersionsAction#perform(), it tries to update
the max and min versions in a column descriptor: 

{code}
     for(HColumnDescriptor descriptor:columnDescriptors) {
       descriptor.setMaxVersions(versions);
       descriptor.setMinVersions(versions);
     }
{code}

If the current minimum version is greater than the new max version, an IllegalArgumentException
would throw from org.apache.hadoop.hbase.HColumnDescriptor#setMaxVersions().  

Here is an example (trying to set max version to 1 while currently min version is 2):
{noformat}
java.lang.IllegalArgumentException: Set MaxVersion to 1 while minVersion is 2. Maximum versions
must be >= minimum versions
at org.apache.hadoop.hbase.HColumnDescriptor.setMaxVersions(HColumnDescriptor.java:634)
at org.apache.hadoop.hbase.chaos.actions.ChangeVersionsAction.perform(ChangeVersionsAction.java:62)
{noformat}


One solution is to change the order of set - set min version first and then set max version
(note: the current implement of org.apache.hadoop.hbase.HColumnDescriptor#setMinVersions()
does not check the min version value and blindly set the version.  Not sure whether this is
by-design).

Another solution is to provide an API to set both min and max version in one function call.
 




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