qian wang created HBASE-11625:
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             Summary: Reading datablock throws "Invalid HFile block magic" and 
can not switch to hdfs checksum 
                 Key: HBASE-11625
                 URL: https://issues.apache.org/jira/browse/HBASE-11625
             Project: HBase
          Issue Type: Bug
          Components: HFile
    Affects Versions: 0.98.4, 0.94.21
            Reporter: qian wang


when using hbase checksum,call readBlockDataInternal() in hfileblock.java, it 
could happen file corruption but it only can switch to hdfs checksum 
inputstream till validateBlockChecksum(). If the datablock's header corrupted 
when b = new HFileBlock(),it throws the exception "Invalid HFile block magic" 
and the rpc call fail



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