colinmjj commented on code in PR #158:
URL: https://github.com/apache/incubator-uniffle/pull/158#discussion_r946269720
##########
server/src/main/java/org/apache/uniffle/server/ShuffleTaskManager.java:
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@@ -250,11 +242,8 @@ public void updateCachedBlockIds(String appId, int
shuffleId, ShufflePartitioned
}
public Roaring64NavigableMap getCachedBlockIds(String appId, int shuffleId) {
- Map<Integer, Roaring64NavigableMap> shuffleIdToBlockIds =
cachedBlockIds.get(appId);
- if (shuffleIdToBlockIds == null) {
- LOG.warn("Unexpected value when getCachedBlockIds for appId[" + appId +
"]");
- return Roaring64NavigableMap.bitmapOf();
- }
+ Map<Integer, Roaring64NavigableMap> shuffleIdToBlockIds = shuffleTaskInfo
Review Comment:
Reduce task maybe request cachedBlockIds after task info was removed because
of expired.
In such case, null will be returned, and it's better to add log to trace it
for problem analysis.
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