YARN-9375. Use Configured in GpuDiscoverer and FpgaDiscoverer (#1131)

Contributed by Adam Antal

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/FpgaDiscoverer.java

@@ -28,6 +28,7 @@
 import java.util.stream.Collectors;
 
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.conf.Configured;
 import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.util.Shell.ShellCommandExecutor;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
@@ -46,11 +47,10 @@
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Sets;
 
-public class FpgaDiscoverer {
+public class FpgaDiscoverer extends Configured {
   private static final Logger LOG = LoggerFactory.getLogger(
       FpgaDiscoverer.class);
 
-  private Configuration conf = null;
   private AbstractFpgaVendorPlugin plugin = null;
   private List<FpgaResourceAllocator.FpgaDevice> currentFpgaInfo = null;
 
@@ -64,11 +64,6 @@ void setScriptRunner(Function<String, Optional<String>> scriptRunner) {
     this.scriptRunner = scriptRunner;
   }
 
-  @VisibleForTesting
-  public void setConf(Configuration configuration) {
-    this.conf = configuration;
-  }
-
   public List<FpgaDevice> getCurrentFpgaInfo() {
     return currentFpgaInfo;
   }
@@ -82,7 +77,7 @@ public boolean diagnose() {
   }
 
   public void initialize(Configuration config) throws YarnException {
-    this.conf = config;
+    setConf(config);
     this.plugin.initPlugin(config);
     // Try to diagnose FPGA
     LOG.info("Trying to diagnose FPGA information ...");
@@ -100,11 +95,11 @@ public void initialize(Configuration config) throws YarnException {
   public List<FpgaDevice> discover()
       throws ResourceHandlerException {
     List<FpgaDevice> list;
-    String allowed = this.conf.get(YarnConfiguration.NM_FPGA_ALLOWED_DEVICES);
+    String allowed = getConf().get(YarnConfiguration.NM_FPGA_ALLOWED_DEVICES);
 
-    String availableDevices = conf.get(
+    String availableDevices = getConf().get(
         YarnConfiguration.NM_FPGA_AVAILABLE_DEVICES);
-    String discoveryScript = conf.get(
+    String discoveryScript = getConf().get(
         YarnConfiguration.NM_FPGA_DEVICE_DISCOVERY_SCRIPT);
 
     FPGADiscoveryStrategy discoveryStrategy;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/gpu/GpuDiscoverer.java

@@ -25,6 +25,7 @@
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.conf.Configured;
 import org.apache.hadoop.util.Shell;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.exceptions.YarnException;
@@ -45,7 +46,7 @@
 
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
-public class GpuDiscoverer {
+public class GpuDiscoverer extends Configured {
   public static final Logger LOG = LoggerFactory.getLogger(
       GpuDiscoverer.class);
   @VisibleForTesting
@@ -61,7 +62,6 @@ public class GpuDiscoverer {
   private static final int MAX_EXEC_TIMEOUT_MS = 10 * 1000;
   private static final int MAX_REPEATED_ERROR_ALLOWED = 10;
 
-  private Configuration conf = null;
   private String pathOfGpuBinary = null;
   private Map<String, String> environment = new HashMap<>();
 
@@ -71,7 +71,7 @@ public class GpuDiscoverer {
   private List<GpuDevice> gpuDevicesFromUser;
 
   private void validateConfOrThrowException() throws YarnException {
-    if (conf == null) {
+    if (getConf() == null) {
       throw new YarnException("Please initialize (call initialize) before use "
           + GpuDiscoverer.class.getSimpleName());
     }
@@ -144,7 +144,7 @@ synchronized GpuDeviceInformation getGpuDeviceInformation()
   }
 
   private boolean IsAutoDiscoveryEnabled() {
-    String allowedDevicesStr = conf.get(
+    String allowedDevicesStr = getConf().get(
         YarnConfiguration.NM_GPU_ALLOWED_DEVICES,
         YarnConfiguration.AUTOMATICALLY_DISCOVER_GPU_DEVICES);
     return allowedDevicesStr.equals(
@@ -205,7 +205,7 @@ private List<GpuDevice> parseGpuDevicesFromAutoDiscoveredGpuInfo()
    */
   private List<GpuDevice> parseGpuDevicesFromUserDefinedValues()
       throws YarnException {
-    String devices = conf.get(
+    String devices = getConf().get(
         YarnConfiguration.NM_GPU_ALLOWED_DEVICES,
         YarnConfiguration.AUTOMATICALLY_DISCOVER_GPU_DEVICES);
 
@@ -249,7 +249,7 @@ private GpuDevice parseGpuDevice(String device, String[] splitByColon,
 
   public synchronized void initialize(Configuration config)
       throws YarnException {
-    this.conf = config;
+    setConf(config);
     if (IsAutoDiscoveryEnabled()) {
       numOfErrorExecutionSinceLastSucceed = 0;
       lookUpAutoDiscoveryBinary(config);