Bryan Beaudreault created HBASE-28079:
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Summary: Unhandled TableExistsException and
NamespaceExistException in BackupSystemTable
Key: HBASE-28079
URL: https://issues.apache.org/jira/browse/HBASE-28079
Project: HBase
Issue Type: Bug
Reporter: Bryan Beaudreault
Most backup-related operations instantiate a BackupSystemTable object. The
first thing it does is check that the {{backup}} namespace and backup-related
tables exist, and create them if not. One way in which this can be triggered is
via LoadIncrementalHFiles, which can load files with a configurable number of
threads. When bulkLoadHFile is called, a preCommitHFile hook is triggered which
does the above. With a certain level of concurrency, one can easily trigger a
race condition on creating the namespace or tables. This exception bubbles up
and fails the bulkload.
We should catch TableExistsException and NamespaceExistException in
BackupSystemTable initialization so that these do not cause client pain.
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