Details
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Improvement
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Status: Open
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Major
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Resolution: Unresolved
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None
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Description
When datanodes get drained they are probably being drained because the hardware is bad, or suspect. The blocks that have no live nodes should be prioritized. However it appears not to be the case at all.
Draining full nodes with lots of blocks but only a handful of under min replicated blocks takes about the full time before fsck reports clean again.