Commits on Jan 29, 2024

1. HADOOP-18883. [ABFS]: Expect-100 JDK bug resolution: prevent multiple… …

   … server calls (apache#6022)
   
   
   
   Address JDK bug JDK-8314978 related to handling of HTTP 100
   responses. 
   
   https://bugs.openjdk.org/browse/JDK-8314978
   
   In the AbfsHttpOperation, after sendRequest() we call processResponse()
   method from AbfsRestOperation.
   Even if the conn.getOutputStream() fails due to expect-100 error, 
   we consume the exception and let the code go ahead.
   This may call getHeaderField() / getHeaderFields() / getHeaderFieldLong() after
   getOutputStream() has failed. These invocation all lead to server calls.
   
   This commit aims to prevent this.
   If connection.getOutputStream() fails due to an Expect-100 error,
   the ABFS client does not invoke getHeaderField(), getHeaderFields(),
   getHeaderFieldLong() or getInputStream().
   
   getResponseCode() is safe as on the failure it sets the
   responseCode variable in HttpUrlConnection object.
   
   Contributed by Pranav Saxena

   

   saxenapranav committed Jan 29, 2024
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