saintstack opened a new pull request #1727:
URL: https://github.com/apache/hbase/pull/1727


   TODO: Check cost; Run HFilePE.
   
   hbase-server/pom.xml
    Add dependency on data sketches.
   
   
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFilePrettyPrinter.java
    Print out key and value quantiles.
   
   
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterImpl.java
    Accumulate sketches. Use sketches for counts and average key and value
    size.


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