Some groovy/java utilities for HBase shell. Note that IntelliJ has groovy console built-in!

gistfile1.txt

import java.nio.ByteBuffer

public static byte[] bytes(long l) {
    ByteBuffer.allocate(Long.BYTES).putLong(l).array();
}

def pretty(byte[] b) {
    def sb = new StringBuilder()  
    for(i=0;i<b.length;i++){
        sb.append(String.format("\\x%02X", b[i]))
    }
    sb.toString()
}

def long2hex(l) {pretty(bytes(l))}


// hbase shell:
// scan 'forecast-availability', { STARTROW => "\x00\x00\x00\x00\x06\x69\x96\xB4", ENDROW => "\x00\x00\x00\x00\x06\x69\x96\xB4\xFF" }