org.apache.hudi.common.model.WriteConcurrencyMode Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hudi.common.model;
import org.apache.hudi.exception.HoodieException;
import java.util.Locale;
/**
* Different concurrency modes for write operations.
*/
public enum WriteConcurrencyMode {
// Only a single writer can perform write ops
SINGLE_WRITER("single_writer"),
// Multiple writer can perform write ops with lazy conflict resolution using locks
OPTIMISTIC_CONCURRENCY_CONTROL("optimistic_concurrency_control");
private final String value;
WriteConcurrencyMode(String value) {
this.value = value;
}
/**
* Getter for write concurrency mode.
* @return
*/
public String value() {
return value;
}
/**
* Convert string value to WriteConcurrencyMode.
*/
public static WriteConcurrencyMode fromValue(String value) {
switch (value.toLowerCase(Locale.ROOT)) {
case "single_writer":
return SINGLE_WRITER;
case "optimistic_concurrency_control":
return OPTIMISTIC_CONCURRENCY_CONTROL;
default:
throw new HoodieException("Invalid value of Type.");
}
}
public boolean supportsOptimisticConcurrencyControl() {
return this == OPTIMISTIC_CONCURRENCY_CONTROL;
}
}