高可用hadoop集群namenode格式化启动异常

etry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/08/04 10:37:22 WARN namenode.NameNode: Encountered exception during format:
org.apache.hadoop.hdfs.qjournal.client.QuorumException: Unable to check if JNs are ready for formatting. 2 exceptions thrown:
172.16.20.112:8485: Call From Master01/172.16.20.110 to Master02:8485 failed on connection exception: java.net.Connect Exception: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
172.16.20.111:8485: Call From Master01/172.16.20.110 to datanode1:8485 failed on connection exception: java.net.Connec tException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at org.apache.hadoop.hdfs.qjournal.client.QuorumException.create(QuorumException.java:81)
at org.apache.hadoop.hdfs.qjournal.client.QuorumCall.rethrowException(QuorumCall.java:286)
at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.hasSomeData(QuorumJournalManager.java:233)
at org.apache.hadoop.hdfs.server.common.Storage.confirmFormat(Storage.java:901)
at org.apache.hadoop.hdfs.server.namenode.FSImage.confirmFormat(FSImage.java:202)
at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1011)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1457)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1582)
19/08/04 10:37:22 ERROR namenode.NameNode: Failed to start namenode.
org.apache.hadoop.hdfs.qjournal.client.QuorumException: Unable to check if JNs are ready for formatting. 2 exceptions thrown:
172.16.20.112:8485: Call From Master01/172.16.20.110 to Master02:8485 failed on connection exception: java.net.Connect Exception: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
172.16.20.111:8485: Call From Master01/172.16.20.110 to datanode1:8485 failed on connection exception: java.net.Connec tException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at org.apache.hadoop.hdfs.qjournal.client.QuorumException.create(QuorumException.java:81)
at org.apache.hadoop.hdfs.qjournal.client.QuorumCall.rethrowException(QuorumCall.java:286)
at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.hasSomeData(QuorumJournalManager.java:233)
at org.apache.hadoop.hdfs.server.common.Storage.confirmFormat(Storage.java:901)
at org.apache.hadoop.hdfs.server.namenode.FSImage.confirmFormat(FSImage.java:202)
at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1011)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1457)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1582)
19/08/04 10:37:22 INFO util.ExitUtil: Exiting with status 1
19/08/04 10:37:22 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at Master01/172.16.20.110
************************************************************/

出现以上问题不能格式化是因为配置的各个journalnode节点没有启动，使用
hadoop-daemon.sh start journalnode
启动相应进程即可。