@Explain(displayName = "compactionId", explainLevels = {Level.USER, Level.DEFAULT, Level.EXTENDED})
    public long getCompactionId() {
        return compactionId;
    }
DDL task description for SHOW COMPACTIONS commands.
ql/src/java/org/apache/hadoop/hive/ql/ddl/process/show/compactions/ShowCompactionsDesc.java