Help Center > > User Guide> Managing an Existing Cluster> Alarm Reference> ALM-14004 Number of Damaged HDFS Blocks Exceeds the Threshold

ALM-14004 Number of Damaged HDFS Blocks Exceeds the Threshold

Updated at:Sep 08, 2020 GMT+08:00

Description

The system checks the number of damaged blocks every 30 seconds and compares it with the threshold. This alarm is generated when the number of damaged blocks exceeds the threshold and is cleared when the number is less than or equal to the threshold. You are advised to run the command (hdfs fsck /) to verify if any files are completely damaged.

Attribute

Alarm ID

Alarm Severity

Automatically Cleared

14004

Major

Yes

Parameters

Parameter

Description

ServiceName

Specifies the service for which the alarm is generated.

RoleName

Specifies the role for which the alarm is generated.

HostName

Specifies the host for which the alarm is generated.

NSName

Specifies the NameService service for which the alarm is generated.

Trigger Condition

Generates an alarm when the actual indicator value exceeds the specified threshold.

Impact on the System

Data is damaged and HDFS fails to read files.

Possible Causes

  • The DataNode instance is abnormal.
  • Data verification information is damaged.

Procedure

  1. On MRS Manager, choose System > Export Log.
  2. Contact the O&M personnel and send the collected log information.

Related Information

N/A

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