advancedxy commented on code in PR #445:
URL: https://github.com/apache/incubator-uniffle/pull/445#discussion_r1055999247
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server/src/main/java/org/apache/uniffle/server/buffer/ShuffleBufferManager.java:
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@@ -431,20 +436,28 @@ private Map<String, Set<Integer>> pickFlushedShuffle() {
long expectedFlushSize = highWaterMark - lowWaterMark;
long pickedFlushSize = 0L;
int printIndex = 0;
+ int printIgnoreIndex = 0;
int printMax = 10;
for (Map.Entry<String, AtomicLong> entry : sizeList) {
long size = entry.getValue().get();
- pickedFlushSize += size;
String appIdShuffleIdKey = entry.getKey();
- addPickedShuffle(appIdShuffleIdKey, pickedShuffle);
- // print detail picked info
- if (printIndex < printMax) {
- LOG.info("Pick application_shuffleId[{}] with {} bytes",
appIdShuffleIdKey, size);
- printIndex++;
- }
- if (pickedFlushSize > expectedFlushSize) {
- LOG.info("Finish flush pick with {} bytes", pickedFlushSize);
- break;
+ if (size > this.shuffleFlushThreshold) {
Review Comment:
> the shuffleServer has a change to accumulate more data and becomes a
larger buffer.
A bit more for this: for a low w:20G, high w:80G shuffle server, current
codebases flushes all the possible shuffles: 80 - 20 = 60. With this feature
enabled, the idea cases would be it flushes 80 - 21 = 59 data...
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