HBase Log Overview

Log Description

Log path: The default storage path of HBase logs is /var/log/Bigdata/hbase/Role name.

HMaster: /var/log/Bigdata/hbase/hm (run logs) and /var/log/Bigdata/audit/hbase/hm (audit logs)
RegionServer: /var/log/Bigdata/hbase/rs (run logs) and /var/log/Bigdata/audit/hbase/rs (audit logs)
ThriftServer: /var/log/Bigdata/hbase/ts2 (run logs, ts2 is the instance name) and /var/log/Bigdata/audit/hbase/ts2 (audit logs, ts2 is the instance name)

Log archive rule: The automatic log compression and archiving function of HBase is enabled. By default, when the size of a log file exceeds 30 MB, the log file is automatically compressed. The naming rule of a compressed log file is as follows: <Original log name>-<yyyy-mm-dd_hh-mm-ss>.[ID].log.zip A maximum of 20 latest compressed files are reserved. The number of compressed files can be configured on the Manager portal.

**Table 1** HBase log list
Type	Name	Description
Run logs	hbase-<SSH_USER>-<process_name>-<hostname>.log	HBase system log that records the startup time, startup parameters, and most logs generated when the HBase system is running.
	hbase-<SSH_USER>-<process_name>-<hostname>.out	Log that records the HBase running environment information.
	<process_name>-<SSH_USER>-<DATE>-<PID>-gc.log	Log that records HBase junk collections.
	checkServiceDetail.log	Log that records whether the HBase service starts successfully.
	hbase.log	Log generated when the HBase service health check script and some alarm check scripts are executed.
	sendAlarm.log	Log that records alarms reported after execution of HBase alarm check scripts.
	hbase-haCheck.log	Log that records the active and standby status of HMaster
	stop.log	Log that records the startup and stop processes of HBase.
Audit logs	hbase-audit-<process_name>.log	Log that records HBase security audit.

Log Level

Table 2 describes the log levels supported by HBase. The priorities of log levels are FATAL, ERROR, WARN, INFO, and DEBUG in descending order. Logs whose levels are higher than or equal to the specified level are printed. The number of printed logs decreases as the specified log level increases.

**Table 2** Log levels
Level	Description
FATAL	Logs of this level record fatal error information about the current event processing that may result in a system crash.
ERROR	Logs of this level record error information about the current event processing, which indicates that system running is abnormal.
WARN	Logs of this level record abnormal information about the current event processing. These abnormalities will not result in system faults.
INFO	Logs of this level record normal running status information about the system and events.
DEBUG	Logs of this level record the system information and system debugging information.

To modify log levels, perform the following operations:

Go to the All Configurations page of the HBase service. For details, see Modifying Cluster Service Configuration Parameters.
On the left menu bar, select the log menu of the target role.
Select a desired log level.
Save the configuration. In the displayed dialog box, click OK to make the configurations take effect.

The configurations take effect immediately without the need to restart the service.

Log Formats

The following table lists the HBase log formats.

**Table 3** Log formats
Type	Component	Format	Example
Run logs	HMaster	<yyyy-MM-dd HH:mm:ss,SSS>\|<Log Level>\|<Thread that generates the log>\|<Message in the log>\|<Location of the log event>	2020-01-19 16:04:53,558 \| INFO \| main \| env:HBASE_THRIFT_OPTS= \| org.apache.hadoop.hbase.util.ServerCommandLine.logProcessInfo(ServerCommandLine.java:113)
	RegionServer	<yyyy-MM-dd HH:mm:ss,SSS>\|<Log Level>\|<Thread that generates the log>\|<Message in the log>\|<Location of the log event>	2020-01-19 16:05:18,589 \| INFO \| regionserver16020-SendThread(linux-k6da:2181) \| Client will use GSSAPI as SASL mechanism. \| org.apache.zookeeper.client.ZooKeeperSaslClient$1.run(ZooKeeperSaslClient.java:285)
	ThriftServer	<yyyy-MM-dd HH:mm:ss,SSS>\|<Log Level>\|<Thread that generates the log>\|<Message in the log>\|<Location of the log event>	2020-02-16 09:42:55,371 \| INFO \| main \| loaded properties from hadoop-metrics2.properties \| org.apache.hadoop.metrics2.impl.MetricsConfig.loadFirst(MetricsConfig.java:111)
Audit logs	HMaster	<yyyy-MM-dd HH:mm:ss,SSS>\|<Log Level>\|<Thread that generates the log>\|<Message in the log>\|<Location of the log event>	2020-02-16 09:42:40,934 \| INFO \| master:linux-k6da:16000 \| Master: [master:linux-k6da:16000] start operation called. \| org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:581)
	RegionServer	<yyyy-MM-dd HH:mm:ss,SSS>\|<Log Level>\|<Thread that generates the log>\|<Message in the log>\|<Location of the log event>	2020-02-16 09:42:51,063 \| INFO \| main \| RegionServer: [regionserver16020] start operation called. \| org.apache.hadoop.hbase.regionserver.HRegionServer.startRegionServer(HRegionServer.java:2396)
	ThriftServer	<yyyy-MM-dd HH:mm:ss,SSS>\|<Log Level>\|<Thread that generates the log>\|<Message in the log>\|<Location of the log event>	2020-02-16 09:42:55,512 \| INFO \| main \| thrift2 server start operation called. \| org.apache.hadoop.hbase.thrift2.ThriftServer.main(ThriftServer.java:421)