本文整理汇总了Java中org.apache.flink.api.common.operators.base.PartitionOperatorBase.PartitionMethod.HASH属性的典型用法代码示例。如果您正苦于以下问题：Java PartitionMethod.HASH属性的具体用法？Java PartitionMethod.HASH怎么用？Java PartitionMethod.HASH使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.apache.flink.api.common.operators.base.PartitionOperatorBase.PartitionMethod的用法示例。
在下文中一共展示了PartitionMethod.HASH属性的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: PartitionOperator
public PartitionOperator(DataSet<T> input, PartitionMethod pMethod, Keys<T> pKeys) {
super(input, input.getType());
if(pMethod == PartitionMethod.HASH && pKeys == null) {
throw new IllegalArgumentException("Hash Partitioning requires keys");
} else if(pMethod == PartitionMethod.RANGE) {
throw new UnsupportedOperationException("Range Partitioning not yet supported");
}
if(pKeys instanceof Keys.ExpressionKeys<?> && !(input.getType() instanceof CompositeType) ) {
throw new IllegalArgumentException("Hash Partitioning with key fields only possible on Composite-type DataSets");
}
this.pMethod = pMethod;
this.pKeys = pKeys;
}
示例2: partitionByHash
/**
* Hash-partitions a DataSet on the specified key fields.
*
* <p><b>Important:</b>This operation shuffles the whole DataSet over the network and can take significant amount of time.
*
* @param fields The field indexes on which the DataSet is hash-partitioned.
* @return The partitioned DataSet.
*/
public PartitionOperator<T> partitionByHash(int... fields) {
return new PartitionOperator<>(this, PartitionMethod.HASH, new Keys.ExpressionKeys<>(fields, getType()), Utils.getCallLocationName());
}
示例3: partitionByHash
/**
* Hash-partitions a DataSet on the specified key fields.
* <p>
* <b>Important:</b>This operation shuffles the whole DataSet over the network and can take significant amount of time.
*
* @param fields The field indexes on which the DataSet is hash-partitioned.
* @return The partitioned DataSet.
*/
public PartitionOperator<T> partitionByHash(int... fields) {
return new PartitionOperator<T>(this, PartitionMethod.HASH, new Keys.ExpressionKeys<T>(fields, getType(), false));
}