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https://issues.apache.org/jira/browse/HBASE-18784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Busbey updated HBASE-18784:
--------------------------------
    Attachment: HBASE-18784.0.patch

-0
   * pull things that don't rely on HDFS in hbase-server/FSUtils into 
hbase-common/CommonFSUtils
    * refactor setStoragePolicy so that it can move into 
hbase-common/CommonFSUtils, as a side effect update it for Hadoop 2.8,3.0+
    * refactor WALProcedureStore so that it handles its own FS interactions
    * add a reflection-based lookup of stream capabilities
    * call said lookup in places where we make WALs to make sure hflush/hsync 
is available.

> Use of filesystem that requires hflush / hsync / append / etc should query 
> outputstream capabilities
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-18784
>                 URL: https://issues.apache.org/jira/browse/HBASE-18784
>             Project: HBase
>          Issue Type: Improvement
>          Components: Filesystem Integration
>    Affects Versions: 1.4.0, 2.0.0-alpha-2
>            Reporter: Sean Busbey
>            Assignee: Sean Busbey
>            Priority: Blocker
>             Fix For: 2.1.0, 1.5.0
>
>         Attachments: HBASE-18784.0.patch
>
>
> In places where we rely on the underlying filesystem holding up the promises 
> of hflush/hsync (most importantly the WAL), we should use the new interfaces 
> provided by HDFS-11644 to fail loudly when they are not present (e.g. on S3, 
> on EC mounts, etc).



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