MRS-operation-guide-lts/doc/component-operation-guide/source/using_oozie/oozie_log_overview.rst

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Oozie Log Overview

Log Description

Log path: The default storage paths of Oozie log files are as follows:

• Run log: /var/log/Bigdata/oozie
• Audit log: /var/log/Bigdata/audit/oozie

Log archiving rule: Oozie logs are classified into run logs, script logs, and audit logs. The maximum size of a run log file is 20 MB, and a maximum of 20 run log files can be reserved. The maximum size of an audit log file is 20 MB, and a maximum of 20 audit log files can be reserved.

Note

A compressed log file is generated for oozie.log every hour. 720 compressed files (log files of one month) are retained by default.

Table 1 Oozie log list

Log Type	Log File Name	Description
Run log	jetty.log	Oozie built-in jetty server log file, which is used to process the request and response information of OozieServlet
	jetty.out	Oozie process startup log file
	oozie_db_temp.log	Oozie database connection log
	oozie-instrumentation.log	Oozie dashboard log file, which records the Oozie running status and configuration information of each component
	oozie-jpa.log	openJPa run log file
	oozie.log	Oozie run log file
	oozie-<SSH_USER>-<DATE>-<PID>-gc.log	Log file that records the garbage collection of the Oozie service
	oozie-ops.log	Oozie operation log file
	check-serviceDetail.log	Oozie health check logs
	oozie-error.log	Oozie running error logs
	threadDump-<DATE>.log	Log file that records stack information when the service process exits normally
Script logs	postinstallDetail.log	Work log file generated after the installation and before the startup
	prestartDetail.log	Pre-startup log file
	startDetail.log	Service startup log file
	stopDetail.log	Service stop log file
	upload-sharelib.log	Operation logs uploaded by sharelib
Audit log	oozie-audit.log	Audit log

Log Level

Table 2 <mrs_01_1843__tf6a4761259f54fb3b310d3e79035d06a> describes the log levels provided by Oozie.

The priorities of log levels are ERROR, WARN, INFO, and DEBUG in descending order. Logs whose levels are higher than or equal to the set level are printed. The number of printed logs decreases as the configured log level increases.

Table 2 Log levels

Level	Description
ERROR	Logs of this level record abnormal information about events that cause process exceptions.
WARN	Logs of this level record exception information about the current event processing.
INFO	Logs of this level record normal running status information about the system and events.
DEBUG	Logs of this level record system information and information about database underlying data transmission.

To modify log levels, perform the following operations:

1. Log in to FusionInsight Manager.
2. Choose Cluster > Name of the desired cluster > Services > Oozie > Configurations.
3. Select All Configurations.
4. On the menu bar on the left, select the log menu of the target role.
5. Select a desired log level.
6. Click Save, and then click OK. The settings take effect after the processing is complete.

Log Formats

The following table lists the Oozie log formats.

Table 3 Log formats

Log Type	Format	Example
Run log	<yyyy-MM-dd HH:mm:ss,SSS><Log level><Location where the log event occurs><Log level><Message in the log>	2015-05-29 21:01:45,268 INFO StatusTransitService$StatusTransitRunnable:539 - USER[-] GROUP[-] Released lock for [org.apache.oozie.service.StatusTransitService]
Script logs	<yyyy-MM-dd HH:mm:ss,SSS><Host name > <Log level > <Message in the log>	2015-06-01 17:18:03 001 suse11-192-168-0-111 oozie INFO Running oozie service check script
Audit log	<yyyy-MM-dd HH:mm:ss,SSS>|<Log Level>|< Thread name | | Message in the log | Location where the log event occurs	2015-06-01 22:38:41,323 | INFO | http-bio-21003-exec-8 | IP [192.168.0.111] USER [null], GROUP [null], APP [null], JOBID [null], OPERATION [null], PARAMETER [null], RESULT [SUCCESS], HTTPCODE [200], ERRORCODE [null], ERRORMESSAGE [null] | org.apache.oozie.util.XLog.log(XLog.java:539)