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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0.20.205.0
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None
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None
Description
In MAPREDUCE-2928, Ravi Gummadi proposed:
we can add LocalStorage.checkBadLocalDirs() call to TT.initialize() that can do disk-health-check of bad local dirs and add dirs to the good local dirs list if they become good.
and Eli Collins added:
Sounds good. Since transient disk failures may cause a file system to become read-only (causing permanent failures) sometimes re-mounting is sufficient to recover in which case it makes sense to re-enable faulty disks w/o TT restart.
Attachments
Issue Links
- is related to
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MAPREDUCE-2928 MR-2413 improvements
- Closed
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MAPREDUCE-3011 TT should remove bad local dirs from conf to prevent constant disk checking
- Closed