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FATAL org.apache.hadoop.hdfs.server.namenode.FSEditLog: Error: flush failed for required journal (JournalAndStream(mgr=QJM to [10.0.22.103:8485, 10.0.22.104:8485, 10.0.22.105:8485, 10.0.22.100:8485, 10.0.22.101:8485], stream=QuorumOutputStream starting at txid 5392832))
java.io.IOException: Timed out waiting 20000ms for a quorum of nodes to respond.

A: 可以在hadoop/etc/hadoop下的hdfs-site.xml中，加入一组配置:

<property>
        <name>dfs.qjournal.write-txns.timeout.ms</name>
        <value>60000</value>
</property>

https://www.cnblogs.com/xyliao/p/5755438.html?utm_source=itdadao&utm_medium=referral
https://blog.csdn.net/xjping0794/article/details/77836543