keith-turner commented on a change in pull request #2346:
URL: https://github.com/apache/accumulo/pull/2346#discussion_r746878178
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File path:
core/src/main/java/org/apache/accumulo/core/clientImpl/ScannerIterator.java
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@@ -65,9 +67,9 @@
private ScannerImpl.Reporter reporter;
- private static ThreadPoolExecutor readaheadPool =
ThreadPools.createThreadPool(0,
Review comment:
The user has control over wether read ahead will happen w/ [this scanner
API](https://github.com/apache/accumulo/blob/bf4d8e4ad5c06e2881a8235ffd0bb293c54289e4/core/src/main/java/org/apache/accumulo/core/client/Scanner.java#L93).
If that is set really high, then read ahead would never happen. So maybe it
nice if the thread pool can go to zero threads instead of always having 1
thread.
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