steveloughran commented on a change in pull request #2278:
URL: https://github.com/apache/hadoop/pull/2278#discussion_r507929259



##########
File path: hadoop-tools/hadoop-azure/dev-support/testrun-scripts/testsupport.sh
##########
@@ -0,0 +1,146 @@
+#!/usr/bin/env bash
+
+# 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.
+

Review comment:
       set -eu for error reporting and rejection of uninited vars
   

##########
File path: hadoop-tools/hadoop-azure/dev-support/testrun-scripts/testsupport.sh
##########
@@ -0,0 +1,146 @@
+#!/usr/bin/env bash
+
+# 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.
+
+conffile=src/test/resources/azure-auth-keys.xml
+bkpconffile=src/test/resources/azure-auth-keys_BKP.xml
+logdir=target/testlogs
+testresultsregex="Results:(\n|.)*?Tests run:"
+testresultsfilename=
+starttime=
+threadcount=
+defaultthreadcount=8
+
+validate() {
+  if ! [ -s "$conffile" ] ; then
+    echo "Exiting. conf file is empty"
+    exit -1
+  fi
+  if ! xmlstarlet val --well-formed "$conffile" ; then
+    echo "Exiting. conf file is not well formed xml"
+    exit -1
+  fi
+  if [ -z "$threadcount" ] ; then
+    threadcount=$defaultthreadcount
+  fi
+  numberegex='^[0-9]+$'
+  if ! [[ $threadcount =~ $numberegex ]] ; then
+    echo "Exiting. The script param (threadcount) should be a number"
+    exit -1
+  fi
+  if [ -z "$scenario" ]; then
+   echo "Exiting. scenario cannot be empty"
+   exit -1
+  fi
+  propertiessize=${#properties[@]}
+  valuessize=${#values[@]}
+  if [ "$propertiessize" -lt 1 ] || [ "$valuessize" -lt 1 ] || [ 
"$propertiessize" -ne "$valuessize" ]; then
+    echo "Exiting. Both properties and values arrays has to be populated and 
of same size. Please check for scenario $scenario"
+    exit -1
+  fi
+
+  if ! [ -f "$conffile" ]; then
+    echo "Exiting. $conffile missing"
+    exit -1
+  fi
+}
+
+checkdependencies() {
+  if ! [ "$(command -v pcregrep)" ]; then
+    echo "Exiting. pcregrep is required to run the script."
+    exit -1
+  fi
+  if ! [ "$(command -v xmlstarlet)" ]; then
+    echo "Exiting. xmlstarlet is required to run the script."
+    exit -1
+  fi
+}
+
+changeconf() {
+  xmlstarlet ed -P -L -d "/configuration/property[name='$1']" $conffile
+  xmlstarlet ed -P -L -s /configuration -t elem -n propertyTMP -v "" -s 
/configuration/propertyTMP -t elem -n name -v "$1" -r 
/configuration/propertyTMP -v property $conffile
+  if ! xmlstarlet ed -P -L -s "/configuration/property[name='$1']" -t elem -n 
value -v "$2" $conffile
+  then
+    echo "Exiting. Changing config property failed."
+    exit -1
+  fi
+}
+
+removeproperties() {
+  propertiessize=${#properties[@]}
+  for ((i = 0; i < propertiessize; i++)); do
+    key=${properties[$i]}
+    xmlstarlet ed -P -L -d "/configuration/property[name='$key']" $conffile
+  done
+}
+
+testwithconfs() {
+  propertiessize=${#properties[@]}
+  valuessize=${#values[@]}
+  if [ "$propertiessize" -ne "$valuessize" ]; then
+    echo "Exiting. Number of properties and values differ for $scenario"
+    exit -1
+  fi
+  for ((i = 0; i < propertiessize; i++)); do
+    key=${properties[$i]}
+    val=${values[$i]}
+    changeconf "$key" "$val"
+  done
+  mvn -T 1C -Dparallel-tests=abfs -Dscale -DtestsThreadCount=$threadcount 
verify >> "$testlogfilename"

Review comment:
       only one scenario needs to run mvn test. Maybe set -Dtest=undefined and 
so they get skipped
   
   At the very least, let the caller declare a set of options to go down to 
maven
   

##########
File path: hadoop-tools/hadoop-azure/src/site/markdown/testing_azure.md
##########
@@ -872,7 +872,7 @@ To run CheckAccess test cases you must register an app with 
no RBAC and set
 the following configurations.
 ```xml
 <!--===========================   FOR CheckAccess =========================-->
-<!-- To run ABFS CheckAccess SAS tests, you must register an app, with no role
+<!-- To run ABFS CheckAccess tests, you must register an app, with no role

Review comment:
       can you pull these instructions up from the XML into the text including 
URLs becoming links. I will be using these instructions to get my token

##########
File path: hadoop-tools/hadoop-azure/src/site/markdown/testing_azure.md
##########
@@ -935,3 +935,30 @@ http[s]://[account][domain-suffix]/[filesystem], please 
use the following:
   <value>{IP}:{PORT}</value>
 </property>
 ```
+
+##Run different combinations of tests using the runtests.sh script

Review comment:
       if this is going to be the policy. pull it up to the top of the document 
after the "no test no review" textHey

##########
File path: hadoop-tools/hadoop-azure/dev-support/testrun-scripts/testsupport.sh
##########
@@ -0,0 +1,146 @@
+#!/usr/bin/env bash
+
+# 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.
+
+conffile=src/test/resources/azure-auth-keys.xml
+bkpconffile=src/test/resources/azure-auth-keys_BKP.xml
+logdir=target/testlogs
+testresultsregex="Results:(\n|.)*?Tests run:"
+testresultsfilename=
+starttime=
+threadcount=
+defaultthreadcount=8
+
+validate() {
+  if ! [ -s "$conffile" ] ; then
+    echo "Exiting. conf file is empty"
+    exit -1
+  fi
+  if ! xmlstarlet val --well-formed "$conffile" ; then

Review comment:
       add comments to explain what these phases are

##########
File path: hadoop-tools/hadoop-azure/dev-support/testrun-scripts/testsupport.sh
##########
@@ -0,0 +1,146 @@
+#!/usr/bin/env bash
+
+# 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.
+
+conffile=src/test/resources/azure-auth-keys.xml
+bkpconffile=src/test/resources/azure-auth-keys_BKP.xml
+logdir=target/testlogs
+testresultsregex="Results:(\n|.)*?Tests run:"
+testresultsfilename=
+starttime=
+threadcount=
+defaultthreadcount=8
+
+validate() {
+  if ! [ -s "$conffile" ] ; then
+    echo "Exiting. conf file is empty"
+    exit -1
+  fi
+  if ! xmlstarlet val --well-formed "$conffile" ; then
+    echo "Exiting. conf file is not well formed xml"
+    exit -1
+  fi
+  if [ -z "$threadcount" ] ; then
+    threadcount=$defaultthreadcount
+  fi
+  numberegex='^[0-9]+$'
+  if ! [[ $threadcount =~ $numberegex ]] ; then
+    echo "Exiting. The script param (threadcount) should be a number"
+    exit -1
+  fi
+  if [ -z "$scenario" ]; then
+   echo "Exiting. scenario cannot be empty"
+   exit -1
+  fi
+  propertiessize=${#properties[@]}
+  valuessize=${#values[@]}
+  if [ "$propertiessize" -lt 1 ] || [ "$valuessize" -lt 1 ] || [ 
"$propertiessize" -ne "$valuessize" ]; then
+    echo "Exiting. Both properties and values arrays has to be populated and 
of same size. Please check for scenario $scenario"
+    exit -1
+  fi
+
+  if ! [ -f "$conffile" ]; then
+    echo "Exiting. $conffile missing"
+    exit -1
+  fi
+}
+
+checkdependencies() {
+  if ! [ "$(command -v pcregrep)" ]; then
+    echo "Exiting. pcregrep is required to run the script."
+    exit -1
+  fi
+  if ! [ "$(command -v xmlstarlet)" ]; then
+    echo "Exiting. xmlstarlet is required to run the script."
+    exit -1
+  fi
+}
+
+changeconf() {
+  xmlstarlet ed -P -L -d "/configuration/property[name='$1']" $conffile
+  xmlstarlet ed -P -L -s /configuration -t elem -n propertyTMP -v "" -s 
/configuration/propertyTMP -t elem -n name -v "$1" -r 
/configuration/propertyTMP -v property $conffile
+  if ! xmlstarlet ed -P -L -s "/configuration/property[name='$1']" -t elem -n 
value -v "$2" $conffile
+  then
+    echo "Exiting. Changing config property failed."
+    exit -1
+  fi
+}
+
+removeproperties() {
+  propertiessize=${#properties[@]}
+  for ((i = 0; i < propertiessize; i++)); do
+    key=${properties[$i]}
+    xmlstarlet ed -P -L -d "/configuration/property[name='$key']" $conffile
+  done
+}
+
+testwithconfs() {
+  propertiessize=${#properties[@]}
+  valuessize=${#values[@]}
+  if [ "$propertiessize" -ne "$valuessize" ]; then
+    echo "Exiting. Number of properties and values differ for $scenario"
+    exit -1
+  fi
+  for ((i = 0; i < propertiessize; i++)); do
+    key=${properties[$i]}
+    val=${values[$i]}
+    changeconf "$key" "$val"
+  done
+  mvn -T 1C -Dparallel-tests=abfs -Dscale -DtestsThreadCount=$threadcount 
verify >> "$testlogfilename"
+  removeproperties
+}
+
+summary() {
+  {
+    echo ""
+    echo "$scenario"
+    echo "========================"
+    pcregrep -M "$testresultsregex" "$testlogfilename"
+  } >> "$testresultsfilename"
+  printf "\n----- Test results -----\n"
+  pcregrep -M "$testresultsregex" "$testlogfilename"
+
+  secondstaken=$((ENDTIME - STARTTIME))
+  mins=$((secondstaken / 60))
+  secs=$((secondstaken % 60))
+  printf "\nTime taken: %s mins %s secs.\n" "$mins" "$secs"
+  echo "Find test logs for the scenario ($scenario) in: $testlogfilename"
+  echo "Find consolidated test results in: $testresultsfilename"
+  echo "----------"
+}
+
+runtestwithconfs() {
+  validate
+  cp $conffile $bkpconffile
+  if [ -z "$starttime" ]; then
+    checkdependencies
+    mvn clean install -DskipTests
+    starttime=$(date +"%Y-%m-%d_%H-%M-%S")
+    mkdir -p "$logdir"
+    testresultsfilename="$logdir/Test-$starttime-Results.log"

Review comment:
       can you just use .txt as a suffix for text files. IDEs and things often 
use .log as a format for structured output




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