Switch the DataNode's BlockVolumeChoosingPolicy to be a private-audience
interface
----------------------------------------------------------------------------------
Key: HDFS-2931
URL: https://issues.apache.org/jira/browse/HDFS-2931
Project: Hadoop HDFS
Issue Type: Task
Components: data-node
Affects Versions: 0.23.0
Reporter: Harsh J
Assignee: Harsh J
Priority: Minor
>From Nicholas, at the tail of HDFS-1120:
{quote}
However, if we annotate it as public, all the classes associated with them
should also be annotated as public. Also, whenever we change the interface or
any of the associated classes, it is an incompatible change.
In our case, BlockVolumeChoosingPolicy uses FSVolumeInterface, which is a part
of FSDatasetInterface. In FSDatasetInterface, there are many classes should not
be exposed. One way to solve it is to make FSVolumeInterface independent of
FSDatasetInterface. However, FSVolumeInterface is not yet a well-designed
interface for the public.
For these reasons, it is justified to annotate it as private, the same as
BlockPlacementPolicy.
{quote}
We should switch BlockVolumeChoosingPolicy to for a private audience.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
