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From Mike Hugo <m...@piragua.com>
Subject Any way to recover from a corrupt block on the metadata table?
Date Wed, 22 May 2013 18:54:42 GMT
We filled the disk on a test server (single node) and looks like we
corrupted some files in the DFS.  In particular, the metadata table is
having some issues

Accumulo is reporting:

exception trying to assign tablet !0;!0<< /root_tablet
java.io.IOException: Could not obtain block: blk_7026126848942509929_17401
file=/accumulo/tables/!0/root_tablet/A0000ct9.rf

And hadoop fsck is showing:


/accumulo/tables/!0/default_tablet/A0000ctb.rf 1303 bytes, 1 block(s):

/accumulo/tables/!0/default_tablet/A0000ctb.rf: CORRUPT block
blk_8698622187813164150

 MISSING 1 blocks of total size 1303 B

0. blk_8698622187813164150_17402 len=1303 MISSING!


/accumulo/tables/!0/root_tablet <dir>

/accumulo/tables/!0/root_tablet/A0000ct9.rf 705 bytes, 1 block(s):

/accumulo/tables/!0/root_tablet/A0000ct9.rf: CORRUPT block
blk_7026126848942509929

 MISSING 1 blocks of total size 705 B

0. blk_7026126848942509929_17401 len=705 MISSING!


/accumulo/tables/!0/table_info <dir>

/accumulo/tables/!0/table_info/A0000cta.rf 37857 bytes, 1 block(s):

/accumulo/tables/!0/table_info/A0000cta.rf: CORRUPT block
blk_8020296141595499911

 MISSING 1 blocks of total size 37857 B

0. blk_8020296141595499911_17401 len=37857 MISSING!


Is there a way to recover from this?


Thanks,


Mike

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