[GitHub] [ozone] captainzmc commented on a change in pull request #2835: HDDS-5946. [Ozone-Streaming] The 'Cannot allocate Memory 'problem occurs in client while test write

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

captainzmc commented on a change in pull request #2835:
URL: https://github.com/apache/ozone/pull/2835#discussion_r748445689



##########
File path: hadoop-hdds/client/src/main/java/org/apache/hadoop/hdds/scm/storage/BlockDataStreamOutput.java
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@@ -259,6 +268,19 @@ public void write(ByteBuffer b, int off, int len) throws IOException {
     }
 
     final StreamBuffer buf = new StreamBuffer(b, off, len);
+
+    // Controls the number of buffers on the client.
+    if (futures.size() >= streamWindowSize) {
+      try {
+        futures.poll().get();

Review comment:
       Yeah, if it's full, let's wait for the first one to finish, and then we'll put another buf to the bufferList




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