[HBASE-15314] Allow more than one backing file in bucketcache

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: BucketCache
• Hadoop Flags: Reviewed
• Assignee: Chunhui Shen
• Reporter: Michael Stack
• Created: 23/Feb/16 16:14
• Updated: 04/Apr/18 22:57
• Resolved: 16/Mar/17 11:02

Description

Allow bucketcache use more than just one backing file: e.g. chassis has more than one SSD in it.

Usage (Setting the following configurations in hbase-site.xml):

<property>
<name>hbase.bucketcache.ioengine</name>
<value>files:/mnt/disk1/bucketcache,/mnt/disk2/bucketcache,/mnt/disk3/bucketcache,/mnt/disk4/bucketcache</value>
</property>
<property>
<name>hbase.bucketcache.size</name>
<value>1048576</value>
</property>

The above setting means the total capacity of cache is 1048576MB(1TB), each file length will be set to 0.25TB.

Issue Links

• links to: Review Board (master)