diff --git a/build.xml b/build.xml
index bc50a95c7..ada68f949 100644
--- a/build.xml
+++ b/build.xml
@@ -85,7 +85,7 @@
 
 	<target name="-translate-protobuf" depends="-check-protobuf" unless="protobuf.uptodate">
 		<echo level="error" message="Translating Protocol Buffer files to Java" />
-		 <apply executable="protoc" parallel="true">
+		<apply executable="protoc" parallel="true">
 			<arg value="--proto_path=${src.proto}" />
 			<arg value="--java_out=src/compiled-proto" />
 			<srcfile />
@@ -95,6 +95,7 @@
 
 	<target name="compile-protobuf" depends="-init,-translate-protobuf,-check-deps" description="Compiles the generated protobuf code.">
 		<javac includeantruntime="true" srcdir="src/compiled-proto" destdir="build/classes" debug="${debug.enabled}" debuglevel="${debug.level}">
+			<compilerarg value="-proc:none" />
 			<classpath refid="project.class.path" />
 		</javac>
 	</target>
@@ -136,6 +137,7 @@
 
 	<target name="compile-parser" depends="-parser,-check-deps" description="Compile the parser.">
 		<javac includeantruntime="true" srcdir="${src.parser.paths}" destdir="build/classes" debug="${debug.enabled}" debuglevel="${debug.level}">
+			<compilerarg value="-proc:none" />
 			<compilerarg value="-Xlint:unchecked"/>
 			<compilerarg value="-Xlint:deprecation"/>
 			<classpath refid="project.class.path" />
@@ -151,6 +153,7 @@
 	<!-- main compilation targets -->
 	<target name="compile" depends="compile-protobuf,compile-parser,-check-deps" description="Compile the compiler.">
 		<javac includeantruntime="true" srcdir="${src.paths}" destdir="build/classes" debug="${debug.enabled}" debuglevel="${debug.level}">
+			<compilerarg value="-proc:none" />
 			<compilerarg value="-Xlint:unchecked"/>
 			<compilerarg value="-Xlint:deprecation"/>
 			<classpath refid="project.class.path" />
@@ -450,6 +453,7 @@
 
 	<target name="-compile-tests" depends="compile,-check-deps">
 		<javac includeantruntime="true" srcdir="src/test" destdir="build/tests" debug="${debug.enabled}" debuglevel="${debug.level}">
+			<compilerarg value="-proc:none" />
 			<compilerarg value="-Xlint:unchecked"/>
 			<compilerarg value="-Xlint:deprecation"/>
 			<classpath refid="project.class.path" />
diff --git a/src/java/boa/functions/BoaAstIntrinsics.java b/src/java/boa/functions/BoaAstIntrinsics.java
index badbf1a91..c8d738486 100644
--- a/src/java/boa/functions/BoaAstIntrinsics.java
+++ b/src/java/boa/functions/BoaAstIntrinsics.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-20222, Hridesh Rajan, Robert Dyer,
+ * Copyright 2017-2023, Hridesh Rajan, Robert Dyer,
  *                 Iowa State University of Science and Technology
  *                 Bowling Green State University
  *                 and University of Nebraska Board of Regents
@@ -64,7 +64,7 @@
  */
 public class BoaAstIntrinsics {
 	@SuppressWarnings("rawtypes")
-	static Context context;
+	public static Context context;
 	private static MapFile.Reader map;
 	private static MapFile.Reader commentsMap;
 	private static MapFile.Reader issuesMap;
diff --git a/src/java/boa/functions/BoaIntrinsics.java b/src/java/boa/functions/BoaIntrinsics.java
index f81ac7223..c9141a806 100644
--- a/src/java/boa/functions/BoaIntrinsics.java
+++ b/src/java/boa/functions/BoaIntrinsics.java
@@ -17,6 +17,8 @@
  */
 package boa.functions;
 
+import java.io.BufferedInputStream;
+import java.io.ObjectInputStream;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -29,6 +31,12 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FSDataInputStream;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+
+import boa.datagen.DefaultProperties;
 import boa.types.Code.CodeRepository;
 import boa.types.Code.Revision;
 import boa.types.Diff.ChangedFile;
@@ -41,12 +49,41 @@
  * @author rdyer
  */
 public class BoaIntrinsics {
+	private static Set<Integer> forksData;
+
+	private static void loadForksData() {
+		try {
+			final Configuration conf = BoaAstIntrinsics.context.getConfiguration();
+			final FileSystem fs;
+			final Path p;
+			if (DefaultProperties.localDataPath != null) {
+				p = new Path(DefaultProperties.localDataPath, "forks.bin");
+				fs = FileSystem.getLocal(conf);
+			} else {
+				p = new Path(
+					BoaAstIntrinsics.context.getConfiguration().get("fs.default.name", "hdfs://boa-njt/"),
+					new Path(conf.get("boa.forks.file", conf.get("boa.ast.dir", conf.get("boa.input.dir", "")) + "/forks.bin"))
+				);
+				fs = FileSystem.get(conf);
+			}
+
+			try (final FSDataInputStream data = fs.open(p);
+				final BufferedInputStream bis = new BufferedInputStream(data);
+				final ObjectInputStream ois = new ObjectInputStream(bis)) {
+				forksData = (Set<Integer>)ois.readObject();
+			}
+		} catch (final Exception e) {
+			System.err.println("Error reading forks.bin: " + e.getMessage());
+			e.printStackTrace();
+			forksData = new HashSet<Integer>();
+		}
+	}
+
 	@FunctionSpec(name = "isfork", returnType = "bool", formalParameters = { "Project" })
 	public static boolean isfork(final Project p) {
-		final String[] knownForks = { };
-		final Set<String> forks = new HashSet<>();
-		Collections.addAll(forks, knownForks);
-		return p.getForked() || forks.contains(p.getId());
+		if (forksData == null)
+			loadForksData();
+		return p.getForked() || forksData.contains(Integer.parseInt(p.getId()));
 	}
 
 	private final static String[] fixingRegex = {
diff --git a/src/java/boa/runtime/BoaRunner.java b/src/java/boa/runtime/BoaRunner.java
index 651a977d4..62459d338 100644
--- a/src/java/boa/runtime/BoaRunner.java
+++ b/src/java/boa/runtime/BoaRunner.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021, Anthony Urso, Hridesh Rajan, Robert Dyer,
+ * Copyright 2014-2023, Anthony Urso, Hridesh Rajan, Robert Dyer,
  *                 Iowa State University of Science and Technology
  *                 and University of Nebraska Board of Regents
  *
@@ -120,6 +120,11 @@ public Job job(final Path[] ins, final Path out) throws IOException {
 										.hasArg()
 										.withArgName("INPUT")
 										.create("c"));
+		options.addOption(org.apache.commons.cli.OptionBuilder.withLongOpt("forks")
+										.withDescription("which INPUT to use for forks data")
+										.hasArg()
+										.withArgName("INPUT")
+										.create("f"));
 		options.addOption(org.apache.commons.cli.OptionBuilder.withLongOpt("splitsize")
 										.withDescription("split size in BYTES")
 										.hasArg()
diff --git a/templates/BoaJavaHadoop.stg b/templates/BoaJavaHadoop.stg
index cd2da8a48..012dd5290 100644
--- a/templates/BoaJavaHadoop.stg
+++ b/templates/BoaJavaHadoop.stg
@@ -56,6 +56,8 @@ public class <name> extends boa.runtime.BoaRunner {
 			configuration.set("boa.ast.dir", line.getOptionValue("ast"));
 		if (line.hasOption("comments"))
 			configuration.set("boa.comments.dir", line.getOptionValue("comments"));
+		if (line.hasOption("forks"))
+			configuration.set("boa.forks.file", line.getOptionValue("forks"));
 
 		if (line.hasOption("splitsize"))
 			configuration.setInt("mapred.max.split.size", Integer.parseInt(line.getOptionValue("splitsize")));