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https://issues.apache.org/jira/browse/HIVE-2773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13214018#comment-13214018
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Ashutosh Chauhan commented on HIVE-2773:
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This will effectively break backwards compatibility since you are removing a
method from an interface. You can get around this by keeping original method as
well as introducing new ones. Then, at the time of invocation of these methods,
you can check if newer methods exists, if they do then invoke them else invoke
old method. Then, we can deprecate old method. But, before you go down that
path and introduce code complexity I suggest you send an email on user@hive to
check with people if they are ok with your current approach as is and will be
able to upgrade their storage handlers, in which case we can go ahead with this
current approach.
> HiveStorageHandler.configureTableJobProperites() should let the handler know
> wether it is configuration for input or output
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-2773
> URL: https://issues.apache.org/jira/browse/HIVE-2773
> Project: Hive
> Issue Type: Improvement
> Reporter: Francis Liu
> Labels: hcatalog, storage_handler
> Attachments: HIVE-2773.D1815.1.patch, HIVE-2773.patch
>
>
> HiveStorageHandler.configureTableJobProperties() is called to allow the
> storage handler to setup any properties that the underlying
> inputformat/outputformat/serde may need. But the handler implementation does
> not know whether it is being called for configuring input or output. This
> makes it a problem for handlers which sets an external state. In the case of
> HCatalog's HBase storageHandler, whenever a write needs to be configured we
> create a write transaction which needs to be committed or aborted later on.
> In this case configuring for both input and output each time
> configureTableJobProperties() is called would not be desirable. This has
> become an issue since HCatalog is dropping storageDrivers for SerDe and
> StorageHandler (see HCATALOG-237).
> My proposal is to replace configureTableJobProperties() with two methods:
> configureInputJobProperties()
> configureOutputJobProperties()
> Each method will have the same signature. I cursory look at the code and I
> believe changes should be straighforward also given that we are not really
> changing anything just splitting responsibility. If the community is fine
> with this approach I will go ahead and create a aptch.
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