Fix: flaky oracle tests (apache#12306)

* Revert "[Build] Disable PulsarDebeziumOracleSourceTest until the problem is resolved (apache#12031)"

This reverts commit 7180c9c.

* Added more memory to the oracle connector, disabled web console

.github/workflows/ci-integration-pulsar-io-ora.yaml

@@ -0,0 +1,118 @@
+#
+# 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.
+#
+
+name: CI - Integration - Pulsar-IO Oracle Source
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - branch-*
+
+env:
+  MAVEN_OPTS: -Dhttp.keepAlive=false -Dmaven.wagon.http.pool=false -Dmaven.wagon.http.retryHandler.class=standard -Dmaven.wagon.http.retryHandler.count=3
+
+jobs:
+
+  pulsar-io:
+    name:
+    runs-on: ubuntu-latest
+    timeout-minutes: 120
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+
+      - name: Tune Runner VM
+        uses: ./.github/actions/tune-runner-vm
+
+      - name: Detect changed files
+        id:   changes
+        uses: apache/pulsar-test-infra/paths-filter@master
+        with:
+          filters: .github/changes-filter.yaml
+
+      - name: Check changed files
+        id: check_changes
+        run: echo "::set-output name=docs_only::${{ fromJSON(steps.changes.outputs.all_count) == fromJSON(steps.changes.outputs.docs_count) && fromJSON(steps.changes.outputs.docs_count) > 0 }}"
+
+      - name: Cache local Maven repository
+        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.m2/repository/*/*/*
+            !~/.m2/repository/org/apache/pulsar
+          key: ${{ runner.os }}-m2-dependencies-all-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-m2-dependencies-core-modules-${{ hashFiles('**/pom.xml') }}
+            ${{ runner.os }}-m2-dependencies-core-modules-
+
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
+        with:
+          distribution: 'adopt'
+          java-version: 11
+
+      - name: clean disk
+        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
+        run: |
+          sudo swapoff -a
+          sudo rm -rf /swapfile /usr/share/dotnet /usr/local/lib/android /opt/ghc
+          sudo apt clean
+          docker rmi $(docker images -q) -f
+          df -h
+
+      - name: run install by skip tests
+        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
+        run: mvn -q -B -ntp clean install -DskipTests
+
+      - name: build pulsar image
+        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
+        run: mvn -B -f docker/pulsar/pom.xml install -am -Pdocker,-main -DskipTests -Ddocker.nocache=true
+
+      - name: build pulsar-all image
+        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
+        run: mvn -B -f docker/pulsar-all/pom.xml install -am -Pdocker,-main -DskipTests -Ddocker.nocache=true
+
+      - name: build artifacts and docker image
+        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
+        run: mvn -B -f tests/docker-images/pom.xml install -am -Pdocker,-main -DskipTests
+
+      - name: run integration tests
+        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
+        run: ./build/run_integration_group.sh PULSAR_IO_ORA
+
+      - name: Upload container logs
+        uses: actions/upload-artifact@v2
+        if: ${{ cancelled() || failure() }}
+        continue-on-error: true
+        with:
+          name: container-logs
+          path: tests/integration/target/container-logs
+
+      - name: Upload surefire-reports
+        uses: actions/upload-artifact@v2
+        if: ${{ cancelled() || failure() }}
+        continue-on-error: true
+        with:
+          name: surefire-reports
+          path: tests/integration/target/surefire-reports

tests/integration/src/test/java/org/apache/pulsar/tests/integration/containers/DebeziumOracleDbContainer.java

@@ -50,7 +50,8 @@ protected void configure() {
         super.configure();
         this.withNetworkAliases(NAME)
             .withExposedPorts(PORTS)
-            .withEnv("DBCA_TOTAL_MEMORY", "1024")
+            .withEnv("DBCA_TOTAL_MEMORY", "2048")
+            .withEnv("WEB_CONSOLE", "false")
             .withStartupTimeout(Duration.of(300, ChronoUnit.SECONDS))
             .withCreateContainerCmdModifier(createContainerCmd -> {
                 createContainerCmd.withHostName(NAME);

tests/integration/src/test/java/org/apache/pulsar/tests/integration/io/sources/debezium/DebeziumOracleDbSourceTester.java

@@ -39,6 +39,7 @@
 public class DebeziumOracleDbSourceTester extends SourceTester<DebeziumOracleDbContainer> implements Closeable {
 
     private static final String NAME = "debezium-oracle";
+    private static final long SLEEP_AFTER_COMMAND_MS = 30_000;
 
     private final String pulsarServiceUrl;
 
@@ -142,25 +143,25 @@ public void prepareSource() {
 
         // good first approximation but still not enough:
         waitForOracleStatus("OPEN");
-        Thread.sleep(30000);
+        Thread.sleep(SLEEP_AFTER_COMMAND_MS);
 
         // configure logminer
         runSqlCmd("shutdown immediate");
 
         // good first approximation but still not enough:
         waitForOracleStatus("ORACLE not available");
-        Thread.sleep(30000);
+        Thread.sleep(SLEEP_AFTER_COMMAND_MS);
 
         runSqlCmd("startup mount");
         // good first approximation but still not enough:
         waitForOracleStatus("MOUNTED");
-        Thread.sleep(30000);
+        Thread.sleep(SLEEP_AFTER_COMMAND_MS);
 
         runSqlCmd("alter database archivelog;");
         runSqlCmd("alter database open;");
         // good first approximation but still not enough:
         waitForOracleStatus("OPEN");
-        Thread.sleep(30000);
+        Thread.sleep(SLEEP_AFTER_COMMAND_MS);
 
         for (String cmd: minerCommands) {
             runSqlCmd(cmd);