[jira] [Created] (HBASE-28079) Unhandled TableExistsException and NamespaceExistException in BackupSystemTable

["Bryan Beaudreault (Jira)" <ji...@apache.org>]

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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