Package org.apache.hadoop.yarn.server.timelineservice.storage.common

Class EventColumnName

java.lang.Object

org.apache.hadoop.yarn.server.timelineservice.storage.common.EventColumnName

public class EventColumnName
extends java.lang.Object

Encapsulates information about Event column names for application and entity tables. Used while encoding/decoding event column names.

Constructor Summary

Constructors

Constructor	Description
EventColumnName(java.lang.String id, java.lang.Long timestamp, java.lang.String infoKey)

Method Summary

Modifier and Type	Method	Description
byte[]	getColumnQualifier()
java.lang.String	getId()
java.lang.String	getInfoKey()
java.lang.Long	getTimestamp()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EventColumnName

public EventColumnName(java.lang.String id,
                       java.lang.Long timestamp,
                       java.lang.String infoKey)

Method Detail

getId

public java.lang.String getId()

getTimestamp

public java.lang.Long getTimestamp()

getInfoKey

public java.lang.String getInfoKey()

getColumnQualifier

public byte[] getColumnQualifier()

Returns:

a byte array with each components/fields separated by Separator#VALUES. This leads to an event column name of the form eventId=timestamp=infokey. If both timestamp and infokey are null, then a qualifier of the form eventId=timestamp= is returned. If only infokey is null, then a qualifier of the form eventId= is returned. These prefix forms are useful for queries that intend to retrieve more than one specific column name.