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He Liangliang commented on HDFS-9422:
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Just record the time consumed, jstack not captured. ~5s(mean
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Haohui Mai commented on HDFS-9422:
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My question is why it takes 5 seconds if this is a purely in memory
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Hadoop QA commented on HDFS-9422:
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stack commented on HDFS-9422:
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Patch just undoes the synchronize on dataset. This dataset synchronize in scan
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Mingliang Liu commented on HDFS-9422:
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Agreed. The most heavy I/O operations scanning the disk are not
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He Liangliang commented on HDFS-9422:
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No, the lock can make NO difference, EXCEPT we move the
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Walter Su commented on HDFS-9422:
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I have no idea why use Arrays.sort() instead of Collections.sort(). And
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Kai Zheng commented on HDFS-9422:
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Hi [~heliangliang],
Thanks for finding and reporting the issue. I took
