org.apache.tez.common

Interface ContainerSignatureMatcher

@InterfaceAudience.Public
 @InterfaceStability.Unstable
public interface ContainerSignatureMatcher

Method Summary

Modifier and Type	Method and Description
Map<String,org.apache.hadoop.yarn.api.records.LocalResource>	getAdditionalResources(Map<String,org.apache.hadoop.yarn.api.records.LocalResource> lr1, Map<String,org.apache.hadoop.yarn.api.records.LocalResource> lr2) Gets additional resources specified in lr2, which are not present for lr1
boolean	isExactMatch(Object cs1, Object cs2) Checks if the container signatures match exactly
boolean	isSuperSet(Object cs1, Object cs2) Checks the compatibility between the specified container signatures.
Object	union(Object cs1, Object cs2) Do a union of 2 signatures Pre-condition.

Method Detail

isSuperSet

boolean isSuperSet(Object cs1,
                   Object cs2)

Checks the compatibility between the specified container signatures.

Returns:

true if the first signature is a super set of the second signature.

isExactMatch

boolean isExactMatch(Object cs1,
                     Object cs2)

Checks if the container signatures match exactly

Returns:

true if exact match

getAdditionalResources

Map<String,org.apache.hadoop.yarn.api.records.LocalResource> getAdditionalResources(Map<String,org.apache.hadoop.yarn.api.records.LocalResource> lr1,
                                                                                    Map<String,org.apache.hadoop.yarn.api.records.LocalResource> lr2)

Gets additional resources specified in lr2, which are not present for lr1

Parameters:

lr1 -

lr2 -

Returns:

additional resources specified in lr2, which are not present for lr1

union

Object union(Object cs1,
             Object cs2)

Do a union of 2 signatures Pre-condition. This function should only be invoked iff cs1 is compatible with cs2. i.e. isSuperSet should not return false.

Parameters:

cs1 - Signature 1 Original signature

cs2 - Signature 2 New signature

Returns:

Union of 2 signatures