MediumAllocationMode.java

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package org.apache.doris.catalog;

/**
 * Defines how Doris decides the storage medium of a data property
 * (partition-level / table-level).
 *
 * <p>Hard-binding semantics with CREATE TABLE:
 * <ul>
 *   <li>{@code PROPERTIES("storage_medium"="ssd|hdd")} -> {@link #STRICT}</li>
 *   <li>no {@code storage_medium} property -> {@link #ADAPTIVE}</li>
 * </ul>
 *
 * <p>The mode drives replica placement:
 * <ul>
 *   <li>{@link #STRICT}: user explicitly requested a medium; placement must
 *       honour it and fail if the requested medium cannot be satisfied.</li>
 *   <li>{@link #ADAPTIVE}: medium is a hint; placement may pick any available
 *       medium according to cluster capacity.</li>
 * </ul>
 */
public enum MediumAllocationMode {
    STRICT,
    ADAPTIVE;

    public boolean isStrict() {
        return this == STRICT;
    }

    public boolean isAdaptive() {
        return this == ADAPTIVE;
    }
}