Package org.apache.pinot.segment.local.segment.creator.impl.inv.json

Class OnHeapJsonIndexCreator

java.lang.Object

org.apache.pinot.segment.local.segment.creator.impl.inv.json.BaseJsonIndexCreator

org.apache.pinot.segment.local.segment.creator.impl.inv.json.OnHeapJsonIndexCreator

All Implemented Interfaces:

Closeable, AutoCloseable, JsonIndexCreator, IndexCreator

public class OnHeapJsonIndexCreator
extends BaseJsonIndexCreator

Implementation of JsonIndexCreator that uses on-heap memory.

On-heap creator uses more heap memory, but is cheaper on computation and does not flush data to disk which can slow down the creation because of the IO latency. Use on-heap creator in the environment where there is enough heap memory and garbage collection won't cause performance issue (e.g. Hadoop/Spark/Pinot Minion).

Field Summary

Fields inherited from class org.apache.pinot.segment.local.segment.creator.impl.inv.json.BaseJsonIndexCreator

HEADER_LENGTH, VERSION_1, VERSION_2

Fields inherited from interface org.apache.pinot.segment.spi.index.creator.JsonIndexCreator

KEY_VALUE_SEPARATOR

Constructor Summary

Constructors

Constructor	Description
OnHeapJsonIndexCreator(File indexDir, String columnName, JsonIndexConfig jsonIndexConfig)

Method Summary

Modifier and Type	Method	Description
void	seal()

Methods inherited from class org.apache.pinot.segment.local.segment.creator.impl.inv.json.BaseJsonIndexCreator

add, close

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pinot.segment.spi.index.creator.JsonIndexCreator

add, add

Constructor Detail

OnHeapJsonIndexCreator

public OnHeapJsonIndexCreator(File indexDir,
                              String columnName,
                              JsonIndexConfig jsonIndexConfig)
                       throws IOException

Throws:

IOException

Method Detail

seal

public void seal()
          throws IOException

Throws:

IOException