steveloughran commented on code in PR #5832:
URL: https://github.com/apache/hadoop/pull/5832#discussion_r1273419854
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/prefetch/S3ARemoteInputStream.java:
##########
@@ -409,27 +455,54 @@ protected String getOffsetStr(long offset) {
return String.format("%d:%d", blockNumber, offset);
}
+ @Override
+ public synchronized void unbuffer() {
+ LOG.debug("{}: unbuffered", getName());
+ if (closeStream(true)) {
+ getS3AStreamStatistics().unbuffered();
+ }
+ }
+
+ /**
+ * Close the stream in close() or unbuffer().
+ * @param unbuffer is this an unbuffer operation?
+ * @return true if the stream was closed; false means it was already closed.
+ */
+ protected boolean closeStream(final boolean unbuffer) {
+
+ if (underlyingResourcesClosed.getAndSet(true)) {
+ return false;
+ }
+
+ if (unbuffer) {
Review Comment:
done
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