[jira] [Created] (HBASE-21098) HBase on S3 Snapshot Performance Increase

["Tyler Mi (JIRA)" <ji...@apache.org>]

Tyler Mi created HBASE-21098:
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             Summary: HBase on S3 Snapshot Performance Increase
                 Key: HBASE-21098
                 URL: https://issues.apache.org/jira/browse/HBASE-21098
             Project: HBase
          Issue Type: Improvement
            Reporter: Tyler Mi


When using Apache HBase, the snapshot feature can be used to make a point in time recovery. To do this, HBase creates a manifest of all the files in all of the Regions so that those files can be referenced again when a user restores a snapshot. With HBase storage mode S3, developers can store their data off-cluster in Amazon S3. However, utilizing S3 as a FileSystem is inefficient in some operations, namely renames. Most Hadoop ecosystem applications use an atomic rename as a method of committing data. However, with S3, a rename is a separate copy and then a delete of every file which is no longer atomic and, in fact, quite costly. In addition, puts and deletes on S3 have latency issues that traditional filesystems do not encounter when manipulating the region snapshots. When HBase on S3 customers have a significant amount of regions, puts, deletes, and renames (the final commit stage of the snapshot) become the bottleneck causing snapshots to take many minutes or even hours to complete.

The purpose of this patch is to increase the overall performance of snapshots while utilizing HBase on S3 through the use of a temporary directory for the snapshots that exists on a traditional filesystem to circumvent the bottlenecks.



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