java.lang.IllegalArgumentException： 找不到 HmacSHA1 算法

Question

通过brew install hadoop安装hadoop后，我想启动hadoop，在mac上运行hadoop2.7.2/start-all.sh时，出现错误，日志如下:

Swing Hu  19:53:45
16/08/19 19:50:25 INFO namenode.FSNamesystem: fsOwner             = swinghu (auth:SIMPLE)
16/08/19 19:50:25 INFO namenode.FSNamesystem: supergroup          = supergroup
16/08/19 19:50:25 INFO namenode.FSNamesystem: isPermissionEnabled = true
16/08/19 19:50:25 INFO namenode.FSNamesystem: HA Enabled: false
16/08/19 19:50:25 INFO namenode.FSNamesystem: Append Enabled: true
16/08/19 19:50:25 ERROR namenode.FSNamesystem: FSNamesystem initialization failed.
java.lang.IllegalArgumentException: Can't find HmacSHA1 algorithm.
    at org.apache.hadoop.security.token.SecretManager.<init>(SecretManager.java:146)
    at org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSecretManager.<init>(AbstractDelegationTokenSecretManager.java:104)
    at org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager.<init>(DelegationTokenSecretManager.java:95)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.createDelegationTokenSecretManager(FSNamesystem.java:6600)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:829)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:697)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:984)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1429)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1554)
16/08/19 19:50:25 INFO namenode.FSNamesystem: Stopping services started for acti

Answer 1

过了两天之后，一切顺利，可能是我重启了我的mac book pro。奇怪的是