org.apache.hadoop.fs.s3a.s3guard

Class MetastoreInstrumentationImpl

java.lang.Object

org.apache.hadoop.fs.s3a.s3guard.MetastoreInstrumentationImpl

All Implemented Interfaces:

MetastoreInstrumentation

public class MetastoreInstrumentationImpl
extends Object
implements MetastoreInstrumentation

A no-op implementation of MetastoreInstrumentation which allows metastores to always return an instance when requested.

Constructor Summary

Constructors

Constructor and Description
MetastoreInstrumentationImpl()

Method Summary

Modifier and Type	Method and Description
void	directoryMarkedAuthoritative() A directory has been tagged as authoritative.
void	entryAdded(long durationNanos) An entry was added.
void	initialized() Initialized event.
void	recordsDeleted(int count) Records have been deleted.
void	recordsRead(int count) Records have been read.
void	recordsWritten(int count) records have been written (including tombstones).
void	retrying() S3Guard is retrying after a (retryable) failure.
void	storeClosed() Store has been closed.
void	throttled() Throttled request.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetastoreInstrumentationImpl

public MetastoreInstrumentationImpl()

Method Detail

initialized

public void initialized()

Description copied from interface: MetastoreInstrumentation

Initialized event.

Specified by:

initialized in interface MetastoreInstrumentation

storeClosed

public void storeClosed()

Description copied from interface: MetastoreInstrumentation

Store has been closed.

Specified by:

storeClosed in interface MetastoreInstrumentation

throttled

public void throttled()

Description copied from interface: MetastoreInstrumentation

Throttled request.

Specified by:

throttled in interface MetastoreInstrumentation

retrying

public void retrying()

Description copied from interface: MetastoreInstrumentation

S3Guard is retrying after a (retryable) failure.

Specified by:

retrying in interface MetastoreInstrumentation

recordsDeleted

public void recordsDeleted(int count)

Description copied from interface: MetastoreInstrumentation

Records have been deleted.

Specified by:

recordsDeleted in interface MetastoreInstrumentation

Parameters:

count - the number of records deleted.

recordsRead

public void recordsRead(int count)

Description copied from interface: MetastoreInstrumentation

Records have been read.

Specified by:

recordsRead in interface MetastoreInstrumentation

Parameters:

count - the number of records read

recordsWritten

public void recordsWritten(int count)

Description copied from interface: MetastoreInstrumentation

records have been written (including tombstones).

Specified by:

recordsWritten in interface MetastoreInstrumentation

Parameters:

count - number of records written.

directoryMarkedAuthoritative

public void directoryMarkedAuthoritative()

Description copied from interface: MetastoreInstrumentation

A directory has been tagged as authoritative.

Specified by:

directoryMarkedAuthoritative in interface MetastoreInstrumentation

entryAdded

public void entryAdded(long durationNanos)

Description copied from interface: MetastoreInstrumentation

An entry was added.

Specified by:

entryAdded in interface MetastoreInstrumentation

Parameters:

durationNanos - time to add