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hbasecounterbigtable

HBase schema row key design - increment counter?

I am struggling to find any documents about increment counter in HBase. Any one knows any?

I am designing a Hbase table schema for my application. My row_key can't guarantee 100% uniqueness. So the question is that when my row_key starts having duplicates, I would like to have an increment counter as part of the row key to distinguish them. thoughts?

Solution

  • you can do one thing just add time stamp with your row key so it will be always unique

    as 

    info:aaa#timestamp
info:bbb#timestamp
info:ccc#timestamp
info:aaa#timestamp
info:bbb#timestamp
info:ccc#timestamp
info:aaa#timestamp
info:bbb#timestamp
info:ccc#timestamp

    os if you do like this the row key will always unique

    one more thing you can try

    uidgen

    It's usually found in /usr/bin/

    nyancat ~ # uuidgen 488bc393-a4f5-4a83-8df8-8c15e737dcc5

    if you are using java then

    public class GenerateUUID {

  public static final void main(String... aArgs){
    UUID idOne = UUID.randomUUID();
    UUID idTwo = UUID.randomUUID();
    log("UUID One: " + idOne);
    log("UUID Two: " + idTwo);
  }

  private static void log(Object aObject){
    System.out.println( String.valueOf(aObject) );
  }
}

    and then you can attach this as your key