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From Yongjun Zhang <yzh...@cloudera.com>
Subject Re: TestIPC failures in Jenkins
Date Fri, 25 Jul 2014 03:22:04 GMT
HI,

I did a test run which dumped /etc/hosts and reported hostname info:

YJD */etc/hosts* contents:


127.0.0.1	localhost

   asf900.ygridcore.net       *asf900*

# The following lines are desirable for IPv6 capable hosts

::1     localhost ip6-localhost ip6-loopback

ff02::1 ip6-allnodes

ff02::2 ip6-allrouters

YJD *hostname* contents:

asf900


(see HADOOP-10888

https://builds.apache.org/job/PreCommit-HADOOP-Build/4362//testReport/,

the host is Slave H0 (Build slave for Hadoop project builds :
asf900.gq1.ygridcore.net)

)


I see hostname "asf900" in "127.0.0.1" row for IPv4  but I don't see
it in the "::1" row for IPv6 in /etc/hosts file. I wonder if adding
"asf900" as an entry to "::1" row would make it work. The method stuck
at is java.net.Inet4AddressImpl.getLocalHostName (IPv4) though.

>
Thanks.

--Yongjun

On Wed, Jul 23, 2014 at 10:14 PM, Yongjun Zhang <yzhang@cloudera.com> wrote:

> Thanks Arpit for throwing this discussion as part of HADOOP-10888
> investigation! It's a good guess of Arpit's about possible missing
> /etc/hosts entry.
>
> Please feel free to comment in HADOOP-10888 so information can be
> centralized there.
>
> Best regards,
>
> --Yongjun
>
>
>
> On Wed, Jul 23, 2014 at 9:07 PM, Arpit Agarwal <aagarwal@hortonworks.com>
> wrote:
>
>> Can someone with administrator access to the Jenkins VMs please take a
>> look
>> at the /etc/hosts configuration?
>>
>> TestIPC often fails in Jenkins runs due to a timeout in
>> InetAddress.getLocalHost. Most likely a missing entry in /etc/hosts for
>> the
>> system hostname.
>>
>> e.g.
>>
>> https://builds.apache.org/job/PreCommit-HADOOP-Build/4352//testReport/org.apache.hadoop.ipc/TestIPC/testRetryProxy/
>>
>>
>> https://builds.apache.org/job/PreCommit-HADOOP-Build/4355/testReport/org.apache.hadoop.ipc/TestIPC/testRetryProxy/
>>
>>
>> https://builds.apache.org/job/PreCommit-HADOOP-Build/4347/testReport/org.apache.hadoop.ipc/TestIPC/testRetryProxy/
>>
>> java.lang.Exception: test timed out after 300000 milliseconds
>>   at java.net.Inet4AddressImpl.getLocalHostName(Native Method)
>>   at java.net.InetAddress.getLocalHost(InetAddress.java:1374)
>>   at org.apache.hadoop.net.NetUtils.getConnectAddress(NetUtils.java:372)
>>   at org.apache.hadoop.net.NetUtils.getConnectAddress(NetUtils.java:359)
>>   at
>>
>> org.apache.hadoop.ipc.TestIPC$TestInvocationHandler.invoke(TestIPC.java:212)
>>   at org.apache.hadoop.ipc.$Proxy11.dummyRun(Unknown Source)
>>   at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
>>   at
>>
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>   at java.lang.reflect.Method.invoke(Method.java:597)
>>   at
>>
>> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
>>   at
>>
>> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:101)
>>   at org.apache.hadoop.ipc.$Proxy11.dummyRun(Unknown Source)
>>   at org.apache.hadoop.ipc.TestIPC.testRetryProxy(TestIPC.java:1060)
>>
>> Thanks,
>> Arpit
>>
>> --
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