[GitHub] [hadoop] steveloughran commented on a change in pull request #1404: HDFS-13660 Copy file till the source file length during distcp

[GitBox <gi...@apache.org>]

steveloughran commented on a change in pull request #1404: HDFS-13660 Copy file till the source file length during distcp
URL: https://github.com/apache/hadoop/pull/1404#discussion_r363389171
 
 

 ##########
 File path: hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/mapred/TestCopyMapper.java
 ##########
 @@ -444,6 +449,54 @@ private void testCopyingExistingFiles(FileSystem fs, CopyMapper copyMapper,
     }
   }
 
+  @Test
+  public void testCopyWhileAppend() throws Exception {
+    deleteState();
+    mkdirs(SOURCE_PATH + "/1");
+    touchFile(SOURCE_PATH + "/1/3");
+    CopyMapper copyMapper = new CopyMapper();
+    StubContext stubContext = new StubContext(getConfiguration(), null, 0);
+    Mapper<Text, CopyListingFileStatus, Text, Text>.Context context =
+            stubContext.getContext();
+    copyMapper.setup(context);
+    final Path path = new Path(SOURCE_PATH + "/1/3");
+    int manyBytes = 100000000;
+    appendFile(path, manyBytes);
+    ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
+    Runnable task = new Runnable() {
+      public void run() {
+        try {
+          int maxAppendAttempts = 20;
+          int appendCount = 0;
+          while (appendCount < maxAppendAttempts) {
+            appendFile(path, 1000);
+            Thread.sleep(200);
+            appendCount++;
+          }
+        } catch (IOException | InterruptedException e) {
+          e.printStackTrace();
+        }
+      }
+    };
+    scheduledExecutorService.schedule(task, 10, TimeUnit.MILLISECONDS);
+    boolean isFileMismatchErrorPresent = false;
+    try {
 
 Review comment:
   OK

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services

---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org