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Posted to common-issues@hadoop.apache.org by "Robert Kanter (JIRA)" <ji...@apache.org> on 2017/11/16 19:15:00 UTC
[jira] [Updated] (HADOOP-14982) Clients using
FailoverOnNetworkExceptionRetry can go into a loop if they're used without
authenticating with kerberos in HA env
[ https://issues.apache.org/jira/browse/HADOOP-14982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Kanter updated HADOOP-14982:
-----------------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: 2.10.0
3.1.0
Status: Resolved (was: Patch Available)
Thanks [~pbacsko]. Committed to trunk and branch-2!
> 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
> Fix For: 3.1.0, 2.10.0
>
> Attachments: HADOOP-14892-001.patch, HADOOP-14892-002.patch, HADOOP-14982-003.patch
>
>
> 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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