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HDDS-342. Add example byteman script to print out hadoop rpc traffic. 

Contributed by Elek, Marton.
This commit is contained in:
Anu Engineer 2018-08-22 14:48:22 -07:00
parent 4c25f37c6c
commit af4b705b5f
3 changed files with 77 additions and 0 deletions
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31
dev-support/byteman/README.md Normal file
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<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
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-->
This folder contains example byteman scripts (http://byteman.jboss.org/) to help
Hadoop debuging.
As the startup script of the hadoop-runner docker image supports byteman
instrumentation it's enough to set the URL of a script to a specific environment
variable to activate it with the docker runs:
```
BYTEMAN_SCRIPT_URL=https://raw.githubusercontent.com/apache/hadoop/trunk/dev-support/byteman/hadooprpc.btm
```
For more info see HADOOP-15656 and HDDS-342

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dev-support/byteman/hadooprpc.btm Normal file
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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# This script instruments hadoop rpc layer to print out all the request/response messages to the standard output.
#
RULE Hadoop RPC request
INTERFACE ^com.google.protobuf.BlockingService
METHOD callBlockingMethod
IF true
DO traceln("--> RPC message request: " + $3.getClass().getSimpleName() + " from " + linked(Thread.currentThread(), "source"));
traceln($3.toString())
ENDRULE
RULE Hadoop RPC response
INTERFACE ^com.google.protobuf.BlockingService
METHOD callBlockingMethod
AT EXIT
IF true
DO traceln("--> RPC message response: " + $3.getClass().getSimpleName() + " to " + unlink(Thread.currentThread(), "source"));
traceln($!.toString())
ENDRULE
RULE Hadoop RPC source IP
CLASS org.apache.hadoop.ipc.Server$RpcCall
METHOD run
IF true
DO link(Thread.currentThread(), "source", $0.connection.toString())
ENDRULE

2
hadoop-dist/src/main/compose/ozone/docker-config
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@ -29,3 +29,5 @@ LOG4J.PROPERTIES_log4j.rootLogger=INFO, stdout
LOG4J.PROPERTIES_log4j.appender.stdout=org.apache.log4j.ConsoleAppender
LOG4J.PROPERTIES_log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
LOG4J.PROPERTIES_log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
#Enable this variable to print out all hadoop rpc traffic to the stdout. See http://byteman.jboss.org/ to define your own instrumentation.
#BYTEMAN_SCRIPT_URL=https://raw.githubusercontent.com/apache/hadoop/trunk/dev-support/byteman/hadooprpc.btm