問(wèn)題現(xiàn)象
HDFS Client訪問(wèn)Server出現(xiàn)如下異常：
...
Caused by: javax.security.sasl.SaslException: No common protection layer between client and server
at com.sun.security.sasl.gsskerb.GssKrb5Client.doFinalHandshake(GssKrb5Client.java:251)
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:186)
at org.apache.hadoop.security.SaslRpcClient.saslEvaluateToken(SaslRpcClient.java:483)
at org.apache.hadoop.security.SaslRpcClient.saslConnect(SaslRpcClient.java:427)
at org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:552)
at org.apache.hadoop.ipc.Client$Connection.access$1800(Client.java:367)
at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:717)
at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:713)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:712)
... 34 more
可能原因
該異常由服務(wù)端與客戶端配置項(xiàng)hadoop.rpc.protection不一致導(dǎo)致歼指。
問(wèn)題解決方案
修正服務(wù)端或客戶端hadoop.rpc.protection配置锅知，確保兩端一致蔚润。如修改服務(wù)端需重啟服務(wù)趴樱。
