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
The recommended value is (4 * FsImage size + 2 GB) * x, where (1 < x <= 4).
For Example: For a 20 GB FsImage size; this means 82 GB to 328 GB.
  • 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.