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From Denis <>
Subject METADATA recovery
Date Sun, 19 Aug 2012 03:08:42 GMT

I have a trouble with my Accumulo installation.
After hardware failure on NameNode, !METATABLE's root_tables is broken :(

>From "fsck /" output:
/accumulo/tables/!0/root_tablet/A000ornd.rf: CORRUPT block
/accumulo/tables/!0/root_tablet/A000ornd.rf: MISSING 1 blocks of total
size 896 B..

What could you recommend to recover the data?
Is it possible to reconstruct !METATABLE's root_tablet based on the
rest of !METATABLE files ?
Or is possible to reconstruct the whole !METATABLE based on th content
of the all found tablets ?
Are there any ready tools to do it ?


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