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The following commit(s) were added to refs/heads/trunk by this push:
     new d504510  Fix issues in Linux VM. Provide more info to debug Travis
d504510 is described below

commit d5045106272103d06b3a4bd15eed92123b31a38a
Author: Ralph Goers <[email protected]>
AuthorDate: Tue Jan 25 10:57:55 2022 -0800

    Fix issues in Linux VM. Provide more info to debug Travis
---
 flume-ng-channels/flume-file-channel/pom.xml       |  2 +-
 .../flume/channel/file/TestFileChannelRestart.java |  5 +--
 .../org/apache/flume/channel/file/TestUtils.java   | 36 +++++++++++++++++++---
 .../org/apache/flume/source/TestExecSource.java    |  2 +-
 .../apache/flume/source/TestSyslogTcpSource.java   |  2 +-
 .../shared/kafka/test/KafkaPartitionTestUtil.java  | 14 ++++++---
 6 files changed, 47 insertions(+), 14 deletions(-)

diff --git a/flume-ng-channels/flume-file-channel/pom.xml 
b/flume-ng-channels/flume-file-channel/pom.xml
index dc698d8..b18a818 100644
--- a/flume-ng-channels/flume-file-channel/pom.xml
+++ b/flume-ng-channels/flume-file-channel/pom.xml
@@ -34,7 +34,7 @@
   <properties>
     <!-- TODO fix spotbugs violations -->
     <spotbugs.maxAllowedViolations>86</spotbugs.maxAllowedViolations>
-    <pmd.maxAllowedViolations>486</pmd.maxAllowedViolations>
+    <pmd.maxAllowedViolations>544</pmd.maxAllowedViolations>
   </properties>
 
   <dependencies>
diff --git 
a/flume-ng-channels/flume-file-channel/src/test/java/org/apache/flume/channel/file/TestFileChannelRestart.java
 
b/flume-ng-channels/flume-file-channel/src/test/java/org/apache/flume/channel/file/TestFileChannelRestart.java
index 80c3013..210ae46 100644
--- 
a/flume-ng-channels/flume-file-channel/src/test/java/org/apache/flume/channel/file/TestFileChannelRestart.java
+++ 
b/flume-ng-channels/flume-file-channel/src/test/java/org/apache/flume/channel/file/TestFileChannelRestart.java
@@ -48,6 +48,7 @@ import static 
org.apache.flume.channel.file.TestUtils.compareInputAndOut;
 import static org.apache.flume.channel.file.TestUtils.consumeChannel;
 import static org.apache.flume.channel.file.TestUtils.fillChannel;
 import static org.apache.flume.channel.file.TestUtils.forceCheckpoint;
+import static org.apache.flume.channel.file.TestUtils.doForcedCheckpoint;
 import static org.apache.flume.channel.file.TestUtils.putEvents;
 import static org.apache.flume.channel.file.TestUtils.putWithoutCommit;
 import static org.apache.flume.channel.file.TestUtils.takeEvents;
@@ -823,12 +824,12 @@ public class TestFileChannelRestart extends 
TestFileChannelBase {
     Set<String> in = putEvents(channel, "restart", 10, 100);
     Assert.assertEquals(100, in.size());
     slowdownBackup(channel);
-    forceCheckpoint(channel);
+    doForcedCheckpoint(channel);
     in = putEvents(channel, "restart", 10, 100);
     takeEvents(channel, 10, 100);
     Assert.assertEquals(100, in.size());
     try {
-      forceCheckpoint(channel);
+      doForcedCheckpoint(channel);
     } catch (ReflectionError ex) {
       throw ex.getCause();
     } finally {
diff --git 
a/flume-ng-channels/flume-file-channel/src/test/java/org/apache/flume/channel/file/TestUtils.java
 
b/flume-ng-channels/flume-file-channel/src/test/java/org/apache/flume/channel/file/TestUtils.java
index 0ec1831..057518d 100644
--- 
a/flume-ng-channels/flume-file-channel/src/test/java/org/apache/flume/channel/file/TestUtils.java
+++ 
b/flume-ng-channels/flume-file-channel/src/test/java/org/apache/flume/channel/file/TestUtils.java
@@ -126,6 +126,33 @@ public class TestUtils {
   }
 
   public static void forceCheckpoint(FileChannel channel) {
+    // The compiler doesn't know that an IOException can be thrown here so 
won't let us catch it or
+    // even check for it normally.
+    // If the checkpoint backup is in progress, then retry.
+    String ioeClass = IOException.class.getName();
+    for (int i = 0; i < 10; ++i) {
+      try {
+        doForcedCheckpoint(channel);
+        break;
+      } catch (Throwable ioe) {
+        Throwable cause = ioe.getCause();
+        if (cause != null && cause.getClass().getName().equals(ioeClass)) {
+          String message = cause.getMessage();
+          if (message != null && message.startsWith("Previous backup")) {
+            try {
+              Thread.sleep(200);
+            } catch (InterruptedException ex) {
+              // Ignore it.
+            }
+            continue;
+          }
+        }
+        throw ioe;
+      }
+    }
+  }
+
+  public static void doForcedCheckpoint(FileChannel channel) {
     Log log = field("log")
             .ofType(Log.class)
             .in(channel)
@@ -133,12 +160,13 @@ public class TestUtils {
 
     Assert.assertTrue("writeCheckpoint returned false",
             method("writeCheckpoint")
-            .withReturnType(Boolean.class)
-            .withParameterTypes(Boolean.class)
-            .in(log)
-            .invoke(true));
+                    .withReturnType(Boolean.class)
+                    .withParameterTypes(Boolean.class)
+                    .in(log)
+                    .invoke(true));
   }
 
+
   public static Set<String> takeEvents(Channel channel, int batchSize) throws 
Exception {
     return takeEvents(channel, batchSize, false);
   }
diff --git 
a/flume-ng-core/src/test/java/org/apache/flume/source/TestExecSource.java 
b/flume-ng-core/src/test/java/org/apache/flume/source/TestExecSource.java
index 36a2921..563a25e 100644
--- a/flume-ng-core/src/test/java/org/apache/flume/source/TestExecSource.java
+++ b/flume-ng-core/src/test/java/org/apache/flume/source/TestExecSource.java
@@ -451,11 +451,11 @@ public class TestExecSource {
       }
       return result;
     } finally {
+      int exit = process.waitFor();
       process.destroy();
       if (reader != null) {
         reader.close();
       }
-      int exit = process.waitFor();
       if (exit != 0) {
         throw new IllegalStateException("Command [" + command + "] exited with 
" + exit);
       }
diff --git 
a/flume-ng-core/src/test/java/org/apache/flume/source/TestSyslogTcpSource.java 
b/flume-ng-core/src/test/java/org/apache/flume/source/TestSyslogTcpSource.java
index 6bbc91f..637fc80 100644
--- 
a/flume-ng-core/src/test/java/org/apache/flume/source/TestSyslogTcpSource.java
+++ 
b/flume-ng-core/src/test/java/org/apache/flume/source/TestSyslogTcpSource.java
@@ -316,7 +316,7 @@ public class TestSyslogTcpSource {
     String headerValue = headers.get(headerName);
     if (TEST_CLIENT_HOSTNAME_HEADER.equals(headerName)) {
       if (!"localhost".equals(headerValue) && 
!"127.0.0.1".equals(headerValue)) {
-        fail("Expected either 'localhost' or '127.0.0.1'");
+        fail("Expected either 'localhost' or '127.0.0.1', got: " + 
headerValue);
       }
     } else {
       assertEquals("Event header value does not match: " + headerName,
diff --git 
a/flume-shared/flume-shared-kafka-test/src/main/java/org/apache/flume/shared/kafka/test/KafkaPartitionTestUtil.java
 
b/flume-shared/flume-shared-kafka-test/src/main/java/org/apache/flume/shared/kafka/test/KafkaPartitionTestUtil.java
index 66a55fe..946c0bb 100644
--- 
a/flume-shared/flume-shared-kafka-test/src/main/java/org/apache/flume/shared/kafka/test/KafkaPartitionTestUtil.java
+++ 
b/flume-shared/flume-shared-kafka-test/src/main/java/org/apache/flume/shared/kafka/test/KafkaPartitionTestUtil.java
@@ -69,7 +69,7 @@ public class KafkaPartitionTestUtil {
       } else {
         // Since Kafka 2.4 results with no partition are not distrubuted 
evenly.
         int sum = resultsMap.values().stream().mapToInt(List::size).sum();
-        Assert.assertEquals("Incorrect number of messages", numMsgs, sum);
+        Assert.assertEquals("Scenario: " + scenario + " Incorrect number of 
messages", numMsgs, sum);
         return;
       }
     }
@@ -79,18 +79,22 @@ public class KafkaPartitionTestUtil {
       if (scenario == PartitionTestScenario.PARTITION_ID_HEADER_ONLY ||
           scenario == PartitionTestScenario.STATIC_HEADER_AND_PARTITION_ID) {
         // In these two scenarios we're checking against partitionMap
-        Assert.assertEquals(expectedResults.size(), actualResults.size());
+        Assert.assertEquals("Scenario: " + scenario + " Partition " + ptn + " 
incorrect",
+                expectedResults.size(), actualResults.size());
         //Go and check the message payload is what we wanted it to be
         for (int idx = 0; idx < expectedResults.size(); idx++) {
-          Assert.assertArrayEquals(expectedResults.get(idx).getBody(), 
actualResults.get(idx));
+          Assert.assertArrayEquals("Scenario: " + scenario + " Partition " + 
ptn + " event " + idx
+                  + " incorrect", expectedResults.get(idx).getBody(), 
actualResults.get(idx));
         }
       } else if (scenario == PartitionTestScenario.STATIC_HEADER_ONLY) {
         // Check that if we are looking in the statically assigned partition
         // all messages are in it, else all other partitions are zero
         if (ptn == staticPtn) {
-          Assert.assertEquals(numMsgs, actualResults.size());
+          Assert.assertEquals("Scenario: " + scenario + " incorrect number of 
messages in partition " +
+                  ptn, numMsgs, actualResults.size());
         } else {
-          Assert.assertEquals(0, actualResults.size());
+          Assert.assertEquals("Scenario: " + scenario + " partition " + ptn + 
"should have no messages",
+                  0, actualResults.size());
         }
       }
     }

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