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https://issues.apache.org/jira/browse/HADOOP-19645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18011766#comment-18011766
]
ASF GitHub Bot commented on HADOOP-19645:
-----------------------------------------
anujmodi2021 commented on code in PR #7837:
URL: https://github.com/apache/hadoop/pull/7837#discussion_r2250353287
##########
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/TestTracingContext.java:
##########
@@ -326,8 +329,8 @@ fileSystemId, FSOperationType.CREATE_FILESYSTEM,
tracingHeaderFormat, new Tracin
}
private void checkHeaderForRetryPolicyAbbreviation(String header, String
expectedFailureReason, String expectedRetryPolicyAbbreviation) {
- String[] headerContents = header.split(":");
- String previousReqContext = headerContents[6];
+ String[] headerContents = header.split(":", SPLIT_NO_LIMIT);
Review Comment:
Taken
##########
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsInputStream.java:
##########
@@ -781,6 +794,132 @@ public void testDefaultReadaheadQueueDepth() throws
Exception {
in.close();
}
+ @Test
+ public void testReadTypeInTracingContextHeader() throws Exception {
+ AzureBlobFileSystem spiedFs = Mockito.spy(getFileSystem());
+ AzureBlobFileSystemStore spiedStore = Mockito.spy(spiedFs.getAbfsStore());
+ AbfsConfiguration spiedConfig =
Mockito.spy(spiedStore.getAbfsConfiguration());
+ AbfsClient spiedClient = Mockito.spy(spiedStore.getClient());
+ Mockito.doReturn(ONE_MB).when(spiedConfig).getReadBufferSize();
+ Mockito.doReturn(ONE_MB).when(spiedConfig).getReadAheadBlockSize();
+ Mockito.doReturn(spiedClient).when(spiedStore).getClient();
+ Mockito.doReturn(spiedStore).when(spiedFs).getAbfsStore();
+ Mockito.doReturn(spiedConfig).when(spiedStore).getAbfsConfiguration();
+ int numOfReadCalls = 0;
+ int fileSize = 0;
+
+ /*
+ * Test to verify Normal Read Type.
+ * Disabling read ahead ensures that read type is normal read.
+ */
+ fileSize = 3 * ONE_MB; // To make sure multiple blocks are read.
+ numOfReadCalls += 3; // 3 blocks of 1MB each.
+ doReturn(false).when(spiedConfig).isReadAheadV2Enabled();
+ doReturn(false).when(spiedConfig).isReadAheadEnabled();
+ testReadTypeInTracingContextHeaderInternal(spiedFs, fileSize, NORMAL_READ,
numOfReadCalls);
Review Comment:
Taken
> ABFS: [ReadAheadV2] Improve Metrics for Read Calls to identify type of read
> done.
> ---------------------------------------------------------------------------------
>
> Key: HADOOP-19645
> URL: https://issues.apache.org/jira/browse/HADOOP-19645
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.3.6, 3.4.1
> Reporter: Anuj Modi
> Assignee: Anuj Modi
> Priority: Major
> Labels: pull-request-available
>
> There are a number of ways in which ABFS driver can trigger a network call to
> read data. We need a way to identify what type of read call was made from
> client. Plan is to add an indication for this in already present
> ClientRequestId header.
> Following are types of read we want to identify:
> # Direct Read: Read from a given position in remote file. This will be
> synchronous read
> # Normal Read: Read from current seeked position where read ahead was
> bypassed. This will be synchronous read.
> # Prefetch Read: Read triggered from background threads filling up in memory
> cache. This will be asynchronous read.
> # Missed Cache Read: Read triggered after nothing was received from read
> ahead. This will be synchronous read.
> # Footer Read: Read triggered as part of footer read optimization. This will
> be synchronous.
> # Small File Read: Read triggered as a part of small file read. This will be
> synchronous read.
> We will add another field in the Tracing Header (Client Request Id) for each
> request. We can call this field "Operation Specific Header" very similar to
> how we have "Retry Header" today. As part of this we will only use it for
> read operations keeping it empty for other operations. Moving ahead f we need
> to publish any operation specific info, same header can be used.
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