Using Apache HBase to store and access data
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MOB cache properties

The MOB cache properties are hbase.mob.file.cache.size, hbase.mob.cache.evict.period, and hbase.mob.cache.evict.remain.ratio.

Table 1. MOB Cache Properties
Property and Default Value Description


Default Value: 1000

Number of opened file handlers to cache. A larger value enhances read operations by providing more file handlers per MOB file cache and reduce frequent file opening and closing. However, if the value is set too high, a "too many opened file handers" condition can occur.


Default Value: 3600

The amount of time (in seconds) after which an unused file is evicted from the MOB cache.


Default Value: 0.5f

A multiplier (between 0.0 and 1.0) that determines how many files remain cached after the hbase.mob.file.cache.size property threshold is reached. The default value is 0.5f, which indicates that half the files (the least-recently used ones) are evicted.