karthikhw commented on issue #1870: HDFS-15201 SnapshotCounter hits 
MaxSnapshotID limit
URL: https://github.com/apache/hadoop/pull/1870#issuecomment-597278362
 
 
   @szetszwo  
   
   Changed getMaxSnapshotID() from -1 to -2 because of 
CURRENT_STATE_ID(Integer.MAX_VALUE - 1) that have -1 already.  
   
   If SNAPSHOT_ID_BIT_WIDTH is 28 then we are ok with -1 but later change in 
SNAPSHOT_ID_BIT_WIDTH to 31 then user have to update getMaxSnapshotID() from -1 
to -2.
   
   
   
   

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