bhalchandrap commented on a change in pull request #3736:
URL: https://github.com/apache/hadoop/pull/3736#discussion_r805102478
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File path:
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java
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@@ -276,6 +279,19 @@
private TransferManager transfers;
private ExecutorService boundedThreadPool;
private ThreadPoolExecutor unboundedThreadPool;
+
+ // S3 reads are prefetched asynchronously using this future pool.
+ private FuturePool futurePool;
+
+ // If true, the prefetching input stream is used for reads.
+ private boolean prefetchEnabled;
+
+ // Size in bytes of a single prefetch block.
+ private int prefetchBlockSize;
+
+ // Size of prefetch queue (in number of blocks).
+ private int prefetchBlockCount;
Review comment:
I will keep name as - is because the number of prefetch threads is
independent of number of prefetch blocks.
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