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arnabp20 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/systemds.git


The following commit(s) were added to refs/heads/master by this push:
     new 76a7962  Move Privacy Post-Processing To Be Before Lineage Cache
76a7962 is described below

commit 76a79629db740572a0f7af116fce5afddc9f4f28
Author: sebwrede <[email protected]>
AuthorDate: Wed Oct 14 13:10:25 2020 +0200

    Move Privacy Post-Processing To Be Before Lineage Cache
---
 .../sysds/runtime/controlprogram/ProgramBlock.java |  4 +
 .../controlprogram/caching/CacheableData.java      |  1 +
 .../sysds/runtime/instructions/Instruction.java    |  5 +-
 .../privacy/propagation/PrivacyPropagator.java     | 17 ++++-
 .../test/functions/privacy/PrivacyLineageTest.java | 86 ++++++++++++++++++++++
 .../functions/privacy/PrivacyLineageTest.dml       | 28 +++++++
 6 files changed, 136 insertions(+), 5 deletions(-)

diff --git 
a/src/main/java/org/apache/sysds/runtime/controlprogram/ProgramBlock.java 
b/src/main/java/org/apache/sysds/runtime/controlprogram/ProgramBlock.java
index b9ef965..bb34bf6 100644
--- a/src/main/java/org/apache/sysds/runtime/controlprogram/ProgramBlock.java
+++ b/src/main/java/org/apache/sysds/runtime/controlprogram/ProgramBlock.java
@@ -45,6 +45,7 @@ import org.apache.sysds.runtime.instructions.cp.StringObject;
 import org.apache.sysds.runtime.lineage.LineageCache;
 import org.apache.sysds.runtime.lineage.LineageCacheConfig.ReuseCacheType;
 import org.apache.sysds.runtime.matrix.data.MatrixBlock;
+import org.apache.sysds.runtime.privacy.propagation.PrivacyPropagator;
 import org.apache.sysds.utils.Statistics;
 
 import java.util.ArrayList;
@@ -260,6 +261,9 @@ public abstract class ProgramBlock implements ParseInfo
                                }
                        }
 
+                       // propagate input privacy constraints to output
+                       PrivacyPropagator.postProcessInstruction(tmp, ec);
+
                        // optional trace information (instruction and runtime)
                        if( LOG.isTraceEnabled() ) {
                                long t1 = System.nanoTime();
diff --git 
a/src/main/java/org/apache/sysds/runtime/controlprogram/caching/CacheableData.java
 
b/src/main/java/org/apache/sysds/runtime/controlprogram/caching/CacheableData.java
index e5fc8d4..6828c7a 100644
--- 
a/src/main/java/org/apache/sysds/runtime/controlprogram/caching/CacheableData.java
+++ 
b/src/main/java/org/apache/sysds/runtime/controlprogram/caching/CacheableData.java
@@ -225,6 +225,7 @@ public abstract class CacheableData<T extends CacheBlock> 
extends Data
                _hdfsFileName = that._hdfsFileName;
                _hdfsFileExists = that._hdfsFileExists; 
                _gpuObjects = that._gpuObjects;
+               _privacyConstraint = that._privacyConstraint;
        }
 
        
diff --git 
a/src/main/java/org/apache/sysds/runtime/instructions/Instruction.java 
b/src/main/java/org/apache/sysds/runtime/instructions/Instruction.java
index 10645ab..7be54e0 100644
--- a/src/main/java/org/apache/sysds/runtime/instructions/Instruction.java
+++ b/src/main/java/org/apache/sysds/runtime/instructions/Instruction.java
@@ -27,7 +27,6 @@ import org.apache.sysds.parser.DataIdentifier;
 import org.apache.sysds.runtime.controlprogram.context.ExecutionContext;
 import org.apache.sysds.runtime.matrix.operators.Operator;
 import org.apache.sysds.runtime.privacy.PrivacyConstraint;
-import org.apache.sysds.runtime.privacy.propagation.PrivacyPropagator;
 
 public abstract class Instruction 
 {
@@ -251,7 +250,5 @@ public abstract class Instruction
         * 
         * @param ec execution context
         */
-       public void postprocessInstruction(ExecutionContext ec) {
-               PrivacyPropagator.postProcessInstruction(this, ec);
-       }
+       public void postprocessInstruction(ExecutionContext ec) {}
 }
diff --git 
a/src/main/java/org/apache/sysds/runtime/privacy/propagation/PrivacyPropagator.java
 
b/src/main/java/org/apache/sysds/runtime/privacy/propagation/PrivacyPropagator.java
index 7b66e87..b6b845d 100644
--- 
a/src/main/java/org/apache/sysds/runtime/privacy/propagation/PrivacyPropagator.java
+++ 
b/src/main/java/org/apache/sysds/runtime/privacy/propagation/PrivacyPropagator.java
@@ -150,6 +150,13 @@ public class PrivacyPropagator
                return mergedPrivacyConstraint;
        }
 
+       /**
+        * Propagate privacy constraints from input to output CPOperands
+        * in case the privacy constraints of the input are activated.
+        * @param inst instruction for which the privacy constraints are 
propagated
+        * @param ec execution context
+        * @return instruction with propagated privacy constraints (usually the 
same instance as the input inst)
+        */
        public static Instruction preprocessInstruction(Instruction inst, 
ExecutionContext ec){
                switch ( inst.getType() ){
                        case CONTROL_PROGRAM:
@@ -284,6 +291,7 @@ public class PrivacyPropagator
                                        MatrixBlock input2 = 
ec.getMatrixInput(inst.input2.getName());
                                        Propagator propagator = new 
MatrixMultiplicationPropagatorPrivateFirst(input1, privacyConstraint1, input2, 
privacyConstraint2);
                                        mergedPrivacyConstraint = 
propagator.propagate();
+                                       
ec.releaseMatrixInput(inst.input1.getName(), inst.input2.getName());
                                }
                                else {
                                        mergedPrivacyConstraint = mergeNary(new 
PrivacyConstraint[]{privacyConstraint1,privacyConstraint2},
@@ -562,13 +570,20 @@ public class PrivacyPropagator
                }
        }
 
+       /**
+        * Propagate privacy constraints to output variables
+        * based on privacy constraint of CPOperand output in instruction
+        * which has been set during privacy propagation preprocessing.
+        * @param inst instruction for which privacy constraints are propagated
+        * @param ec execution context
+        */
        public static void postProcessInstruction(Instruction inst, 
ExecutionContext ec){
                // if inst has output
                List<CPOperand> instOutputs = getOutputOperands(inst);
                if (!instOutputs.isEmpty()){
                        for ( CPOperand output : instOutputs ){
                                PrivacyConstraint outputPrivacyConstraint = 
output.getPrivacyConstraint();
-                               if ( 
privacyConstraintActivated(outputPrivacyConstraint) )
+                               if ( 
privacyConstraintActivated(outputPrivacyConstraint) || (outputPrivacyConstraint 
!= null && outputPrivacyConstraint.hasFineGrainedConstraints()))
                                        setOutputPrivacyConstraint(ec, 
outputPrivacyConstraint, output.getName());
                        }
                }
diff --git 
a/src/test/java/org/apache/sysds/test/functions/privacy/PrivacyLineageTest.java 
b/src/test/java/org/apache/sysds/test/functions/privacy/PrivacyLineageTest.java
new file mode 100644
index 0000000..96a1f3e
--- /dev/null
+++ 
b/src/test/java/org/apache/sysds/test/functions/privacy/PrivacyLineageTest.java
@@ -0,0 +1,86 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.sysds.test.functions.privacy;
+
+import org.apache.sysds.parser.DataExpression;
+import org.apache.sysds.runtime.meta.MatrixCharacteristics;
+import org.apache.sysds.runtime.privacy.PrivacyConstraint;
+import org.apache.sysds.runtime.privacy.finegrained.DataRange;
+import org.apache.sysds.test.AutomatedTestBase;
+import org.apache.sysds.test.TestConfiguration;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class PrivacyLineageTest extends AutomatedTestBase {
+
+       private static final String TEST_DIR = "functions/privacy/";
+       private final static String TEST_CLASS_DIR = TEST_DIR + 
PrivacyLineageTest.class.getSimpleName() + "/";
+
+       @Override public void setUp() {
+               addTestConfiguration("LineageReuse",
+                       new TestConfiguration(TEST_CLASS_DIR, 
"PrivacyLineageTest", new String[]{"c"}));
+       }
+
+       @Test
+       public void propagatePrivacyWithLineageFullReuseTest() {
+               
propagationWithLineage(PrivacyConstraint.PrivacyLevel.PrivateAggregation);
+       }
+
+       private void propagationWithLineage(PrivacyConstraint.PrivacyLevel 
privacyLevel) {
+
+               TestConfiguration config = 
availableTestConfigurations.get("LineageReuse");
+               loadTestConfiguration(config);
+               fullDMLScriptName = SCRIPT_DIR + TEST_DIR + 
config.getTestScript() + ".dml";
+
+               int n = 20;
+               int m = 20;
+               double[][] a = getRandomMatrix(m, n, -1, 1, 1, -1);
+               int k = 20;
+               double[][] b = getRandomMatrix(n, k, -1, 1, 1, -1);
+
+               PrivacyConstraint privacyConstraint = new 
PrivacyConstraint(privacyLevel);
+               privacyConstraint.getFineGrainedPrivacy().put(new DataRange(new 
long[]{0,0}, new long[]{4,4}), PrivacyConstraint.PrivacyLevel.Private);
+               MatrixCharacteristics aCharacteristics = new 
MatrixCharacteristics(m, n, k, k);
+               MatrixCharacteristics bCharacteristics = new 
MatrixCharacteristics(n, k, k, k);
+
+               writeInputMatrixWithMTD("A", a, false, aCharacteristics, 
privacyConstraint);
+               writeInputMatrixWithMTD("B", b, false, bCharacteristics);
+
+               programArgs = new String[]{"-lineage", "reuse_full", "-nvargs",
+                       "A=" + input("A"), "B=" + input("B"), "C=" + 
output("C")};
+
+               runTest(true,false,null,-1);
+
+               finegrainedAssertions();
+
+               programArgs = new String[]{"-nvargs",
+                       "A=" + input("A"), "B=" + input("B"), "C=" + 
output("C")};
+               runTest(true,false,null,-1);
+
+               finegrainedAssertions();
+       }
+
+       private void finegrainedAssertions(){
+               String outputFineGrained = 
readDMLMetaDataValueCatchException("C", OUTPUT_DIR, 
DataExpression.FINE_GRAINED_PRIVACY);
+               Assert.assertEquals(
+                       
"{\"Private\":[[[0,0],[0,19]],[[1,0],[1,19]],[[2,0],[2,19]],[[3,0],[3,19]],[[4,0],[4,19]]],\"PrivateAggregation\":[]}",
+                       outputFineGrained);
+       }
+}
diff --git a/src/test/scripts/functions/privacy/PrivacyLineageTest.dml 
b/src/test/scripts/functions/privacy/PrivacyLineageTest.dml
new file mode 100644
index 0000000..d258cb9
--- /dev/null
+++ b/src/test/scripts/functions/privacy/PrivacyLineageTest.dml
@@ -0,0 +1,28 @@
+#-------------------------------------------------------------
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+#-------------------------------------------------------------
+
+A = read($A)
+B = read($B)
+C = A %*% B;
+for (i in 1:10)
+    C = A %*% B;
+write(C, $C);
+

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