alluxio.client.meta

Interface MetaMasterClient

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

RetryHandlingMetaMasterClient

public interface MetaMasterClient
extends Closeable

Interface for a meta master client.

Method Summary

Modifier and Type	Method and Description
alluxio.wire.BackupResponse	backup(alluxio.grpc.BackupPOptions options) Writes a backup of the journal to the specified directory.
String	checkpoint() Creates a checkpoint in the primary master journal system.
alluxio.wire.ConfigCheckReport	getConfigReport() Gets the server-side configuration check report.
alluxio.grpc.MasterInfo	getMasterInfo(Set<alluxio.grpc.MasterInfoField> masterInfoFields)
Map<String,alluxio.grpc.MetricValue>	getMetrics() Gets a map of metrics property names and their values from metrics system.

Methods inherited from interface java.io.Closeable

close

Method Detail

backup

alluxio.wire.BackupResponse backup(alluxio.grpc.BackupPOptions options)
                            throws IOException

Writes a backup of the journal to the specified directory. The backup is written to the directory with a file name containing the date when the file was written.

Parameters:

options - backup options

Returns:

the server response

Throws:

IOException

getConfigReport

alluxio.wire.ConfigCheckReport getConfigReport()
                                        throws IOException

Gets the server-side configuration check report.

Returns:

configuration check report

Throws:

IOException

getMasterInfo

alluxio.grpc.MasterInfo getMasterInfo(Set<alluxio.grpc.MasterInfoField> masterInfoFields)
                               throws IOException

Parameters:

masterInfoFields - optional list of fields to query; if null all fields will be queried

Returns:

the requested master info

Throws:

IOException

getMetrics

Map<String,alluxio.grpc.MetricValue> getMetrics()
                                         throws alluxio.exception.status.AlluxioStatusException

Gets a map of metrics property names and their values from metrics system.

Returns:

a map of metrics information

Throws:

alluxio.exception.status.AlluxioStatusException

checkpoint

String checkpoint()
           throws IOException

Creates a checkpoint in the primary master journal system.

Returns:

the hostname of the master that did the checkpoint

Throws:

IOException