HBase master 서버 시작 오류

mirinae.maru

HBase 시작시 Master서버가 시작되지 않고 로그에 다음과 같은 메세지가 출력된다.

java.lang.NoClassDefFoundError: org/apache/htrace/SamplerBuilder
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:644)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:628)
	...
Caused by: java.lang.ClassNotFoundException: org.apache.htrace.SamplerBuilder
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	...
2019-02-25 11:33:10,404 ERROR [main] master.HMasterCommandLine: Master exiting
java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster. 
	at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:3100)
	...
Caused by: java.lang.NoClassDefFoundError: org/apache/htrace/SamplerBuilder
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:644)
	...
	... 5 more
Caused by: java.lang.ClassNotFoundException: org.apache.htrace.SamplerBuilder
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	...
	... 25 more

Hadoop Home /share/hadoop/yarn/timelineservice/lib/htrace-core-3.1.0-incubating.jar

해결방법은 Hadoop 서버에 있는 htrace 라이브러리를 HBase Home / lib디렉토리에 복사하고 서버를 실행하면 된다.