com.facebook.presto.spi.connector.classloader

Class ClassLoaderSafeConnectorPageSink

java.lang.Object

com.facebook.presto.spi.connector.classloader.ClassLoaderSafeConnectorPageSink

All Implemented Interfaces:

ConnectorPageSink

public class ClassLoaderSafeConnectorPageSink
extends Object
implements ConnectorPageSink

Field Summary

Fields inherited from interface com.facebook.presto.spi.ConnectorPageSink

NOT_BLOCKED

Constructor Summary

Constructors

Constructor and Description
ClassLoaderSafeConnectorPageSink(ConnectorPageSink delegate, ClassLoader classLoader)

Method Summary

Modifier and Type	Method and Description
void	abort()
CompletableFuture<?>	appendPage(Page page) Returns a future that will be completed when the page sink can accept more pages.
CompletableFuture<Collection<io.airlift.slice.Slice>>	finish() Notifies the connector that no more pages will be appended and returns connector-specific information that will be sent to the coordinator to complete the write operation.
long	getCompletedBytes() Gets the number of output bytes written by this page source so far.
long	getSystemMemoryUsage() Get the total memory that needs to be reserved in the general memory pool.
long	getValidationCpuNanos() ConnectorPageSink can provide optional validation to check the data is correctly consumed by connector (e.g.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassLoaderSafeConnectorPageSink

public ClassLoaderSafeConnectorPageSink(ConnectorPageSink delegate,
                                        ClassLoader classLoader)

Method Detail

getCompletedBytes

public long getCompletedBytes()

Description copied from interface: ConnectorPageSink

Gets the number of output bytes written by this page source so far. If size is not available, this method should return zero.

Specified by:

getCompletedBytes in interface ConnectorPageSink

getSystemMemoryUsage

public long getSystemMemoryUsage()

Description copied from interface: ConnectorPageSink

Get the total memory that needs to be reserved in the general memory pool. This memory should include any buffers, etc. that are used for reading data.

Specified by:

getSystemMemoryUsage in interface ConnectorPageSink

Returns:

the memory used so far in table read

getValidationCpuNanos

public long getValidationCpuNanos()

Description copied from interface: ConnectorPageSink

ConnectorPageSink can provide optional validation to check the data is correctly consumed by connector (e.g. output table has the correct data).

This method returns the CPU spent on validation, if any.

Specified by:

getValidationCpuNanos in interface ConnectorPageSink

appendPage

public CompletableFuture<?> appendPage(Page page)

Description copied from interface: ConnectorPageSink

Returns a future that will be completed when the page sink can accept more pages. If the page sink can accept more pages immediately, this method should return NOT_BLOCKED.

Specified by:

appendPage in interface ConnectorPageSink

finish

public CompletableFuture<Collection<io.airlift.slice.Slice>> finish()

Description copied from interface: ConnectorPageSink

Notifies the connector that no more pages will be appended and returns connector-specific information that will be sent to the coordinator to complete the write operation. This method may be called immediately after the previous call to ConnectorPageSink.appendPage(com.facebook.presto.common.Page) (even if the returned future is not complete).

Specified by:

finish in interface ConnectorPageSink

abort

public void abort()

Specified by:

abort in interface ConnectorPageSink