Peter Bacsko created HADOOP-14982:
-------------------------------------
Summary: Clients using FailoverOnNetworkExceptionRetry can go into
a loop if they're used without authenticating with kerberos in HA env
Key: HADOOP-14982
URL: https://issues.apache.org/jira/browse/HADOOP-14982
Project: Hadoop Common
Issue Type: Bug
Components: common
Reporter: Peter Bacsko
Assignee: Peter Bacsko
If HA is configured for the Resource Manager in a secure environment, using the
mapred client goes into a loop if the user is not authenticated with Kerberos.
{noformat}
[root@pb6sec-1 ~]# mapred job -list
17/10/25 06:37:43 INFO client.ConfiguredRMFailoverProxyProvider: Failing over
to rm36
17/10/25 06:37:43 WARN ipc.Client: Exception encountered while connecting to
the server : javax.security.sasl.SaslException: GSS initiate failed [Caused by
GSSException: No valid credentials provided (Mechanism level: Failed to find
any Kerberos tgt)]
17/10/25 06:37:43 INFO retry.RetryInvocationHandler: java.io.IOException:
Failed on local exception: java.io.IOException:
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Failed to find any Kerberos
tgt)]; Host Details : local host is: "host_redacted/IP_redacted"; destination
host is: "com.host2.redacted:8032; , while invoking
ApplicationClientProtocolPBClientImpl.getApplications over rm36 after 1
failover attempts. Trying to failover after sleeping for 160ms.
17/10/25 06:37:43 INFO client.ConfiguredRMFailoverProxyProvider: Failing over
to rm25
17/10/25 06:37:43 INFO retry.RetryInvocationHandler: java.net.ConnectException:
Call From host_redacted/IP_redacted to com.host.redacted:8032 failed on
connection exception: java.net.ConnectException: Connection refused; For more
details see: http://wiki.apache.org/hadoop/ConnectionRefused, while invoking
ApplicationClientProtocolPBClientImpl.getApplications over rm25 after 2
failover attempts. Trying to failover after sleeping for 582ms.
17/10/25 06:37:44 INFO client.ConfiguredRMFailoverProxyProvider: Failing over
to rm36
17/10/25 06:37:44 WARN ipc.Client: Exception encountered while connecting to
the server : javax.security.sasl.SaslException: GSS initiate failed [Caused by
GSSException: No valid credentials provided (Mechanism level: Failed to find
any Kerberos tgt)]
17/10/25 06:37:44 INFO retry.RetryInvocationHandler: java.io.IOException:
Failed on local exception: java.io.IOException:
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Failed to find any Kerberos
tgt)]; Host Details : local host is: "host_redacted/IP_redacted"; destination
host is: "com.host2.redacted:8032; , while invoking
ApplicationClientProtocolPBClientImpl.getApplications over rm36 after 3
failover attempts. Trying to failover after sleeping for 977ms.
17/10/25 06:37:45 INFO client.ConfiguredRMFailoverProxyProvider: Failing over
to rm25
17/10/25 06:37:45 INFO retry.RetryInvocationHandler: java.net.ConnectException:
Call From host_redacted/IP_redacted to com.host.redacted:8032 failed on
connection exception: java.net.ConnectException: Connection refused; For more
details see: http://wiki.apache.org/hadoop/ConnectionRefused, while invoking
ApplicationClientProtocolPBClientImpl.getApplications over rm25 after 4
failover attempts. Trying to failover after sleeping for 1667ms.
17/10/25 06:37:46 INFO client.ConfiguredRMFailoverProxyProvider: Failing over
to rm36
17/10/25 06:37:46 WARN ipc.Client: Exception encountered while connecting to
the server : javax.security.sasl.SaslException: GSS initiate failed [Caused by
GSSException: No valid credentials provided (Mechanism level: Failed to find
any Kerberos tgt)]
17/10/25 06:37:46 INFO retry.RetryInvocationHandler: java.io.IOException:
Failed on local exception: java.io.IOException:
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Failed to find any Kerberos
tgt)]; Host Details : local host is: "host_redacted/IP_redacted"; destination
host is: "com.host2.redacted:8032; , while invoking
ApplicationClientProtocolPBClientImpl.getApplications over rm36 after 5
failover attempts. Trying to failover after sleeping for 2776ms.
17/10/25 06:37:49 INFO client.ConfiguredRMFailoverProxyProvider: Failing over
to rm25
17/10/25 06:37:49 INFO retry.RetryInvocationHandler: java.net.ConnectException:
Call From host_redacted/IP_redacted to com.host.redacted:8032 failed on
connection exception: java.net.ConnectException: Connection refused; For more
details see: http://wiki.apache.org/hadoop/ConnectionRefused, while invoking
ApplicationClientProtocolPBClientImpl.getApplications over rm25 after 6
failover attempts. Trying to failover after sleeping for 1055ms.
17/10/25 06:37:50 INFO client.ConfiguredRMFailoverProxyProvider: Failing over
to rm36
17/10/25 06:37:50 WARN ipc.Client: Exception encountered while connecting to
the server : javax.security.sasl.SaslException: GSS initiate failed [Caused by
GSSException: No valid credentials provided (Mechanism level: Failed to find
any Kerberos tgt)]
17/10/25 06:37:50 INFO retry.RetryInvocationHandler: java.io.IOException:
Failed on local exception: java.io.IOException:
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Failed to find any Kerberos
tgt)]; Host Details : local host is: "host_redacted/IP_redacted"; destination
host is: "com.host2.redacted:8032; , while invoking
ApplicationClientProtocolPBClientImpl.getApplications over rm36 after 7
failover attempts. Trying to failover after sleeping for 2608ms.
...
{noformat}
The reason is that the retry handler sees a {{ConnectException}}, then fails
over to the inactive RM. This obviously doesn't work, so it comes back to the
active and whole process starts again. The RetryHandler should examine if the
{{ConnectException}} is actually caused by a {{GSSException}} (and probably
check the "No valid credentials provided" message) and if so, it should not
perform a failover.
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