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Posted to common-issues@hadoop.apache.org by "Dexter Bradshaw (JIRA)" <ji...@apache.org> on 2014/01/06 18:58:01 UTC

[jira] [Updated] (HADOOP-10206) Port WASB HBase support to Hadoop 2.0

     [ https://issues.apache.org/jira/browse/HADOOP-10206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dexter Bradshaw updated HADOOP-10206:
-------------------------------------


Changes are being reviewed on the HWX JIRA at https://hwxmonarch.atlassian.net/browse/HADOOP. Two outstanding items remain to be completed:

a. TODO: Perform internal hsync on a smaller bounded queue when it approaches capacity approaching capacity.
b. TODO: The I/O queue is single threaded. Mostafa claims that this is for correctness. I have to investigate whether we can in fact do overlapped parallel I/O’s since the addresses of the log blocks are already determined by the streaming interface.

The temporary fix with the unbounded queue is coded and now works with large tables in YCSB.

> Port WASB HBase support to Hadoop 2.0
> -------------------------------------
>
>                 Key: HADOOP-10206
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10206
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 2.2.0
>         Environment: Windows, Windows Azure
>            Reporter: Dexter Bradshaw
>              Labels: patch
>   Original Estimate: 504h
>  Remaining Estimate: 504h
>
> A series of changes for HBase support on Hadoop 2.0. These changes include support for page blobs, fixes to allows HBase logging to block blobs, and support for hsync and hflush methods in the Syncable interface.



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