Reports Manager

The Reports Manager fetches the fsimage from the NameNode at regular intervals. It reads the fsimage and creates a Lucene index for it. To improve the indexing performance, Cloudera recommends provisioning a host as powerful as possible and dedicating an SSD disk to the Reports Manager.

Table 1. Reports Manager

Component	Java Heap	CPU	Disk
Reports Manager	3-4 times the size of the fsimage.	Minimum: 8 cores Recommended: 16 cores (32 cores, with hyperthreading enabled.)	1 dedicated disk that is at least 20 times the size of the fsimage. Cloudera strongly recommends using SSD disks.