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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2022/04/21 10:48:43 UTC

[GitHub] [hadoop] monthonk opened a new pull request, #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

monthonk opened a new pull request, #4212:
URL: https://github.com/apache/hadoop/pull/4212

   ### Description of PR
   
   HADOOP-18175 Fix many test failures on prefetching branch.
   
   **ITestS3AContractUnbuffer** -> changed getPos() on a closed file to return 0
   
   **ITestS3AUnbuffer** -> skipping unsupported input stream for now, HADOOP-18184 should address this test later
   
   **ITestS3ARequesterPays** -> wired up `streamStatistics.streamOpened()` and changed assertion based on stream type
   
   **ITestS3AFileContextStatistics** -> moved seek past EOF validation to read(), which is what S3AInputStream does
   
   
   ### How was this patch tested?
   
   Tested in `eu-west-1` with both `fs.s3a.prefetch.enabled=true` and `fs.s3a.prefetch.enabled=false`
   
   ### For code changes:
   
   - [x] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
   - [x] Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
   - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)?
   - [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`, `NOTICE-binary` files?
   
   


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#issuecomment-1105151657

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] monthonk commented on a diff in pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
monthonk commented on code in PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#discussion_r858504016


##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AUnbuffer.java:
##########
@@ -192,6 +197,12 @@ private boolean isObjectStreamOpen(FSDataInputStream inputStream) {
     return ((S3AInputStream) inputStream.getWrappedStream()).isObjectStreamOpen();
   }
 
+  private void skipIfCannotUnbuffer(InputStream inputStream) {

Review Comment:
   just noticed we can use `FSDataInputStream.hasCapability(...)`, I will change to it



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[GitHub] [hadoop] monthonk commented on a diff in pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
monthonk commented on code in PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#discussion_r858489694


##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AUnbuffer.java:
##########
@@ -192,6 +197,12 @@ private boolean isObjectStreamOpen(FSDataInputStream inputStream) {
     return ((S3AInputStream) inputStream.getWrappedStream()).isObjectStreamOpen();
   }
 
+  private void skipIfCannotUnbuffer(InputStream inputStream) {

Review Comment:
   At this point we still don't know what kind of inputStream it is, the method `hasCapability` only visible after we cast it to S3AInputStream or S3PrefetchingInputStream



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[GitHub] [hadoop] steveloughran commented on pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
steveloughran commented on PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#issuecomment-1117682542

   LGTM.
   
   +1, merging


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#issuecomment-1109686826

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] hadoop-yetus commented on pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#issuecomment-1105291827

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] monthonk commented on a diff in pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
monthonk commented on code in PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#discussion_r858492522


##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3ARequesterPays.java:
##########
@@ -71,11 +72,16 @@ public void testRequesterPaysOptionSuccess() throws Throwable {
       inputStream.seek(0);
       inputStream.readByte();
 
-      // Verify > 1 call was made, so we're sure it is correctly configured for each request
-      IOStatisticAssertions
-          .assertThatStatisticCounter(inputStream.getIOStatistics(),
-              StreamStatisticNames.STREAM_READ_OPENED)
-          .isGreaterThan(1);
+      if (conf.getBoolean(PREFETCH_ENABLED_KEY, true)) {
+        // For S3PrefetchingInputStream, verify a call was made
+        IOStatisticAssertions.assertThatStatisticCounter(inputStream.getIOStatistics(),
+            StreamStatisticNames.STREAM_READ_OPENED).isEqualTo(1);
+      } else {
+        // For S3InputStream, verify > 1 call was made,

Review Comment:
   you're right, updated the comment



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[GitHub] [hadoop] hadoop-yetus commented on pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#issuecomment-1109697812

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] steveloughran merged pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
steveloughran merged PR #4212:
URL: https://github.com/apache/hadoop/pull/4212


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[GitHub] [hadoop] monthonk commented on pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
monthonk commented on PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#issuecomment-1116166223

   @mukund-thakur @steveloughran would you be able to have a look at this one? Thanks!


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[GitHub] [hadoop] steveloughran commented on a diff in pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
steveloughran commented on code in PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#discussion_r865156426


##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AUnbuffer.java:
##########
@@ -192,6 +197,12 @@ private boolean isObjectStreamOpen(FSDataInputStream inputStream) {
     return ((S3AInputStream) inputStream.getWrappedStream()).isObjectStreamOpen();
   }
 
+  private void skipIfCannotUnbuffer(InputStream inputStream) {

Review Comment:
   you can also use StoreImplementationUtils when needed -which it isn't here



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[GitHub] [hadoop] ahmarsuhail commented on a diff in pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
ahmarsuhail commented on code in PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#discussion_r858421027


##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3ARequesterPays.java:
##########
@@ -71,11 +72,16 @@ public void testRequesterPaysOptionSuccess() throws Throwable {
       inputStream.seek(0);
       inputStream.readByte();
 
-      // Verify > 1 call was made, so we're sure it is correctly configured for each request
-      IOStatisticAssertions
-          .assertThatStatisticCounter(inputStream.getIOStatistics(),
-              StreamStatisticNames.STREAM_READ_OPENED)
-          .isGreaterThan(1);
+      if (conf.getBoolean(PREFETCH_ENABLED_KEY, true)) {
+        // For S3PrefetchingInputStream, verify a call was made
+        IOStatisticAssertions.assertThatStatisticCounter(inputStream.getIOStatistics(),
+            StreamStatisticNames.STREAM_READ_OPENED).isEqualTo(1);
+      } else {
+        // For S3InputStream, verify > 1 call was made,

Review Comment:
   should this be For S3AInputStream ?



##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AUnbuffer.java:
##########
@@ -192,6 +197,12 @@ private boolean isObjectStreamOpen(FSDataInputStream inputStream) {
     return ((S3AInputStream) inputStream.getWrappedStream()).isObjectStreamOpen();
   }
 
+  private void skipIfCannotUnbuffer(InputStream inputStream) {

Review Comment:
   You should just be able to use `inputStream.hasCapability(StreamCapabilities.UNBUFFER)` instead of this method



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[GitHub] [hadoop] hadoop-yetus commented on pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#issuecomment-1109660722

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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   |:----:|----------:|--------:|:--------:|:-------:|
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[GitHub] [hadoop] monthonk commented on a diff in pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
monthonk commented on code in PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#discussion_r860878110


##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/read/S3PrefetchingInputStream.java:
##########
@@ -103,8 +103,7 @@ public synchronized int available() throws IOException {
    */
   @Override
   public synchronized long getPos() throws IOException {

Review Comment:
   `this.inputStream.getPos()` below could throw it, so I have to pass it up here



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[GitHub] [hadoop] ahmarsuhail commented on a diff in pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
ahmarsuhail commented on code in PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#discussion_r860843620


##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/read/S3PrefetchingInputStream.java:
##########
@@ -103,8 +103,7 @@ public synchronized int available() throws IOException {
    */
   @Override
   public synchronized long getPos() throws IOException {

Review Comment:
   this method no longer throws an IOException 



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[GitHub] [hadoop] steveloughran commented on pull request #4212: HADOOP-18175. fix test failures with prefetching s3a input stream

Posted by GitBox <gi...@apache.org>.
steveloughran commented on PR #4212:
URL: https://github.com/apache/hadoop/pull/4212#issuecomment-1117685812

   merged!


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