guluo created HBASE-28704:
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             Summary: The expired snapshot can be read by CopyTable or 
ExportSnapshot
                 Key: HBASE-28704
                 URL: https://issues.apache.org/jira/browse/HBASE-28704
             Project: HBase
          Issue Type: Bug
          Components: mapreduce, snapshots
    Affects Versions: 2.4.13
            Reporter: guluo


We can get data of the expired snapshot through the following way
{code:java}
hbase org.apache.hadoop.hbase.mapreduce.CopyTable --snapshot expired_snapshot 
--new.name my_table{code}
 
And we did not check if the snapshot is expired when we export a snaoshot by 
ExportSnapshot tool



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