JiangHua Zhu created HDFS-16113:
-----------------------------------
Summary: Improve CallQueueManager#swapQueue() execution performance
Key: HDFS-16113
URL: https://issues.apache.org/jira/browse/HDFS-16113
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: JiangHua Zhu
In CallQueueManager#swapQueue(), there are some codes:
CallQueueManager#swapQueue() {
......
while (!queueIsReallyEmpty(oldQ)) {}
......
}
In queueIsReallyEmpty():
......
for (int i = 0; i <CHECKPOINT_NUM; i++) {}
...
We found that this implementation has certain performance hindrances in real
clusters.
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