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Navigation

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Ambari SCOM

Use the Ambari SCOM main navigation tree to browse cluster, HDFS and MapReduce performance metrics.

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MapReduce JobTracker

This scenario checks JobTracker Host Component health state. User can choose the Cluster by clicking Parent Cluster Name, after User can see intuitively visualization:

  • Memory Heap Utilization
  • Threads Status
  • Garbage Collection Time (ms)
  • Average RPC Wait Time

Alerts

Name

Alert Message

Description

Capacity Remaining

There is little or no space capacity remaining in HDFS.

Gives warning/critical alert if percentage of available space on all HDFS nodes together is less then upper/lower threshold.

Corrupted Blocks

There are corrupted file blocks in HDFS.

Gives critical alert if number of corrupted blocks is more than threshold.

DataNodes Down

A significant number of DataNodes are down in the cluster.

Gives warning/critical alert if percentage of dead HDFS data nodes in cluster is more than lower/upper threshold.

Failed Jobs

MapReduce jobs are failing too frequently.

Gives warning/critical alert if percentage of map-reduce failed jobs is more than lower/upper threshold.

Hive Metastore State

Hive Metastore server is not running.

Gives critical alert if a Hive Metastore service is unavailable.

HiveServer State

HiveServer service is not running.

Gives critical alert if a Hive Server service is unavailable.