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私の Flink ストリーミング ジョブは、安全な hdfs に書き込みます。kinit 後、kerberos チケットの有効期限が切れるまで、ジョブはスムーズに実行されます。現在1dになっている寿命を延ばすことはできません。このエラーをどのように処理すればよいか教えてください。

エラーログ：

Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
        at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:211)
        at org.apache.hadoop.security.SaslRpcClient.saslConnect(SaslRpcClient.java:413)
        at org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:554)
        at org.apache.hadoop.ipc.Client$Connection.access$1800(Client.java:369)
        at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:723)
        at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:719)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656)
        at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:718)
        ... 26 more
Caused by: GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)
        at sun.security.jgss.krb5.Krb5InitCredential.getInstance(Krb5InitCredential.java:147)
        at sun.security.jgss.krb5.Krb5MechFactory.getCredentialElement(Krb5MechFactory.java:122)
        at sun.security.jgss.krb5.Krb5MechFactory.getMechanismContext(Krb5MechFactory.java:187)
        at sun.security.jgss.GSSManagerImpl.getMechanismContext(GSSManagerImpl.java:224)
        at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:212)
        at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:179)
        at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:192)
        ... 35 more
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