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https://issues.apache.org/jira/browse/HADOOP-19139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17838161#comment-17838161
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ASF GitHub Bot commented on HADOOP-19139:
-----------------------------------------
saxenapranav commented on code in PR #6699:
URL: https://github.com/apache/hadoop/pull/6699#discussion_r1568773530
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsInputStream.java:
##########
@@ -192,6 +210,30 @@ public int read(long position, byte[] buffer, int offset,
int length)
throw new IOException(FSExceptionMessages.STREAM_IS_CLOSED);
}
}
+
+ /*
+ * When the inputStream is started, if the application tries to parallelly
read
+ * ont he inputStream, the first read will be synchronized and the
subsequent
+ * reads will be non-synchronized.
+ */
+ if (!successfulUsage) {
Review Comment:
Have renamed it to `sequentialReadStarted`. Have removed the blocking in
position read, since, it doesnt lead to prefetching.
> [ABFS]: No GetPathStatus call for opening AbfsInputStream
> ---------------------------------------------------------
>
> Key: HADOOP-19139
> URL: https://issues.apache.org/jira/browse/HADOOP-19139
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Reporter: Pranav Saxena
> Assignee: Pranav Saxena
> Priority: Major
> Labels: pull-request-available
>
> Read API gives contentLen and etag of the path. This information would be
> used in future calls on that inputStream. Prior information of eTag is of not
> much importance.
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