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From Gonzalo Herreros <gherre...@gmail.com>
Subject Re: Flume log4j Appender issue
Date Tue, 01 Dec 2015 10:39:51 GMT
Adding a library to Flume shouldn't affect hive or any other tools.
You can add the jar to the lib or plugin.d directories.

Regards,
Gonzalo

On 1 December 2015 at 10:13, yogendra reddy <yogendra.60@gmail.com> wrote:

> update
>
> I ran the flume agent first and then made changes to hadoop log4j
> properties file and after the restart this started working fine. but now
> Hive service is not coming up because of avro-ipc jar that I had to add to
> hadoop-hdfs lib to get flume log4j appender working
>
> I would like to know if anybody here has used flume to copy Hadoop
> daemon/service logs?
>
> Thanks,
> Yogendra
>
> On Wed, Nov 25, 2015 at 2:03 PM, yogendra reddy <yogendra.60@gmail.com>
> wrote:
>
>> Hi All,
>>
>> I'm trying to configure flume to write hadoop service logs to a common
>> sink.
>>
>> Here's what I have added to hdfs log4j.properties
>>
>> # Define the root logger to the system property "hadoop.root.logger".
>> log4j.rootLogger=${hadoop.root.logger}, flume
>>
>> #Flume Appender
>> log4j.appender.flume =
>> org.apache.flume.clients.log4jappender.Log4jAppender
>> log4j.appender.flume.Hostname = localhost
>> log4j.appender.flume.Port = 41414
>>
>> and when I run sample pi job I get this error
>>
>> $ hadoop jar hadoop-mapreduce-examples.jar pi 10 10
>> log4j:ERROR Could not find value for key log4j.appender.flume.layout
>> 15/11/25 07:23:26 WARN api.NettyAvroRpcClient: Using default maxIOWorkers
>> log4j:ERROR RPC client creation failed! NettyAvroRpcClient { host:
>> localhost, port: 41414 }: RPC connection error
>> Exception in thread "main" java.lang.ExceptionInInitializerError
>>         at org.apache.hadoop.util.RunJar.run(RunJar.java:200)
>>         at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
>> Caused by: org.apache.commons.logging.LogConfigurationException:
>> User-specified log class 'org.apache.commons.logging.impl.Log4JLogger'
>> cannot be found or is not useable.
>>         at
>> org.apache.commons.logging.impl.LogFactoryImpl.discoverLogImplementation(LogFactoryImpl.java:804)
>>         at
>> org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:541)
>>         at
>> org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:292)
>>         at
>> org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:269)
>>         at
>> org.apache.commons.logging.LogFactory.getLog(LogFactory.java:657)
>>         at
>> org.apache.hadoop.util.ShutdownHookManager.<clinit>(ShutdownHookManager.java:44)
>>         ... 2 more
>>
>> I have added these jars to hadoop-hdfs lib -
>>
>> avro-ipc-1.7.3.jar
>> flume-avro-source-1.5.2.2.2.7.1-33.jar
>> flume-ng-log4jappender-1.5.2.2.2.7.1-33.jar
>> flume-hdfs-sink-1.5.2.2.2.7.1-33.jar
>> flume-ng-sdk-1.5.2.2.2.7.1-33.jar
>>
>> and I do have the commons-logging( commons-logging-1.1.3.jar) and
>> log4j(1.2.17) jars present in the hdfs lib. Any pointers to debug this
>> issue?
>>
>> Thanks,
>> Yogendra
>>
>>
>>
>

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