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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.

30-Warning
10-Critical

Under-Replicated Blocks

Number of under-replicated blocks in the HDFS is too high.

Gives warning/critical alert if percentage of under-replicated blocks is more than lower/upper threshold.

1-Warning
5-Critical

Corrupted Blocks

There are corrupted file blocks in HDFS.

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

1

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.

10-Warning
20-Critical

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.

10-Warning
40-Critical

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.

Invalid TaskTrackers

There are TaskTracker nodes which are in the invalid state.

Gives critical alert if there is at least one blacklisted task-tracker.

1 JobTracker Service State

Memory Heap Usage

JobTracker service is not running.

Gives critical alert if a JobTracker service is unavailable.

Memory Heap Usage

JobTracker is working under is working under high memory pressure.

Gives warning/critical alert if percentage of used job-tracker memory heap is more than lower/upper threshold.

80-Warning
90-Critical

Memory Heap Usage

NameNode is working under high memory pressure.

Gives warning/critical alert if percentage of used NameNode memory heap is more than lower/upper threshold.

80-Warning
90-Critical

TaskTrackers Down

A significant number of TaskTrackers are down in the cluster

NameNode Service State

NameNode service is not running.

Gives warning/critical alert if a NameNode service is unavailable. percentage of map reduce dead task-trackers is more than lower/upper threshold.

10-Warning
20-Critical

TaskTracker Service State

Turns TaskTracker service to warning state if the TaskTracker service is unavailable.

NameNode Service State

NameNode

Oozie Server Service State

Oozie Server service is not running.

Gives critical alert if a Oozie Server NameNode service is unavailable.

Secondary NameNode Service State

Secondary NameNode service is not running.

Gives warning alert if a Secondary NameNode service is unavailable.

TaskTracker JobTracker Service State

Turns TaskTracker service to warning state if the TaskTracker service is unavailable.

JobTracker service is not running.

Gives critical alert if a JobTracker service is unavailable.

Oozie Server Service State

Oozie Server service is not running.

Gives critical alert if a Oozie Server service is unavailable.

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.

TaskTrackers Down

A significant number of TaskTrackers are down in the cluster.

Gives warning/critical alert if percentage of map reduce dead task-trackers is more than lower/upper threshold.

10-Warning
20-Critical

WebHCat Server Service State

WebHCat Server service is not running.

Gives critical alert if a Templeton WebHCat Server service is unavailable.