Redundant meta tables
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Key: HBASE-1108
URL: https://issues.apache.org/jira/browse/HBASE-1108
Project: Hadoop HBase
Issue Type: Improvement
Reporter: Andrew Purtell
Fix For: 0.20.0
If the data file for -ROOT- or .META. is damaged, a HBase installation is
rendered inoperative. Manual recovery through writing a new -ROOT- by hand is
relatively simple (I think) but it's not simple and maybe not even possible to
recreate a .META. containing thousands of regions. During one experiment I lost
the entire .META. data file due to DFS errors during compaction. This can be
avoided by utilizing multiple backing data files for -ROOT- and .META.
synchronized in a manner that avoids total data loss should the filesystem
become degraded.
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