HBASE-22943 Various procedures should not cache log trace level

hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.java

@@ -92,7 +92,6 @@
 public class SplitTableRegionProcedure
     extends AbstractStateMachineRegionProcedure<SplitTableRegionState> {
   private static final Logger LOG = LoggerFactory.getLogger(SplitTableRegionProcedure.class);
-  private Boolean traceEnabled = null;
   private RegionInfo daughterOneRI;
   private RegionInfo daughterTwoRI;
   private byte[] bestSplitRow;
@@ -341,9 +340,7 @@ protected Flow executeFromState(MasterProcedureEnv env, SplitTableRegionState st
   @Override
   protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)
       throws IOException, InterruptedException {
-    if (isTraceEnabled()) {
-      LOG.trace(this + " rollback state=" + state);
-    }
+    LOG.trace("{} rollback state={}", this, state);
 
     try {
       switch (state) {
@@ -887,18 +884,6 @@ private void writeMaxSequenceIdFile(MasterProcedureEnv env) throws IOException {
     }
   }
 
-  /**
-   * The procedure could be restarted from a different machine. If the variable is null, we need to
-   * retrieve it.
-   * @return traceEnabled
-   */
-  private boolean isTraceEnabled() {
-    if (traceEnabled == null) {
-      traceEnabled = LOG.isTraceEnabled();
-    }
-    return traceEnabled;
-  }
-
   @Override
   protected boolean abort(MasterProcedureEnv env) {
     // Abort means rollback. We can't rollback all steps. HBASE-18018 added abort to all

hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.java

@@ -78,8 +78,6 @@ public class CloneSnapshotProcedure
   // Monitor
   private MonitoredTask monitorStatus = null;
 
-  private Boolean traceEnabled = null;
-
   /**
    * Constructor (for failover)
    */
@@ -130,9 +128,7 @@ private void restoreSnapshotAcl(MasterProcedureEnv env) throws IOException {
   @Override
   protected Flow executeFromState(final MasterProcedureEnv env, final CloneSnapshotState state)
       throws InterruptedException {
-    if (isTraceEnabled()) {
-      LOG.trace(this + " execute state=" + state);
-    }
+    LOG.trace("{} execute state={}", this, state);
     try {
       switch (state) {
         case CLONE_SNAPSHOT_PRE_OPERATION:
@@ -519,15 +515,4 @@ private void addRegionsToMeta(final MasterProcedureEnv env) throws IOException {
     metaChanges.updateMetaParentRegions(env.getMasterServices().getConnection(), newRegions);
   }
 
-  /**
-   * The procedure could be restarted from a different machine. If the variable is null, we need to
-   * retrieve it.
-   * @return traceEnabled
-   */
-  private Boolean isTraceEnabled() {
-    if (traceEnabled == null) {
-      traceEnabled = LOG.isTraceEnabled();
-    }
-    return traceEnabled;
-  }
 }

hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/EnableTableProcedure.java

@@ -52,8 +52,6 @@ public class EnableTableProcedure
 
   private TableName tableName;
 
-  private Boolean traceEnabled = null;
-
   public EnableTableProcedure() {
   }
 
@@ -80,9 +78,7 @@ public EnableTableProcedure(MasterProcedureEnv env, TableName tableName,
   @Override
   protected Flow executeFromState(final MasterProcedureEnv env, final EnableTableState state)
       throws InterruptedException {
-    if (isTraceEnabled()) {
-      LOG.trace(this + " execute state=" + state);
-    }
+    LOG.trace("{} execute state={}", this, state);
 
     try {
       switch (state) {
@@ -389,18 +385,6 @@ private void postEnable(final MasterProcedureEnv env, final EnableTableState sta
     runCoprocessorAction(env, state);
   }
 
-  /**
-   * The procedure could be restarted from a different machine. If the variable is null, we need to
-   * retrieve it.
-   * @return traceEnabled
-   */
-  private Boolean isTraceEnabled() {
-    if (traceEnabled == null) {
-      traceEnabled = LOG.isTraceEnabled();
-    }
-    return traceEnabled;
-  }
-
   /**
    * Coprocessor Action.
    * @param env MasterProcedureEnv

hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/RestoreSnapshotProcedure.java

@@ -77,8 +77,6 @@ public class RestoreSnapshotProcedure
   // Monitor
   private MonitoredTask monitorStatus = null;
 
-  private Boolean traceEnabled = null;
-
   /**
    * Constructor (for failover)
    */
@@ -129,9 +127,7 @@ private MonitoredTask getMonitorStatus() {
   @Override
   protected Flow executeFromState(final MasterProcedureEnv env, final RestoreSnapshotState state)
       throws InterruptedException {
-    if (isTraceEnabled()) {
-      LOG.trace(this + " execute state=" + state);
-    }
+    LOG.trace("{} execute state={}", this, state);
 
     // Make sure that the monitor status is set up
     getMonitorStatus();
@@ -549,16 +545,4 @@ private void restoreSnapshotAcl(final MasterProcedureEnv env) throws IOException
         env.getMasterServices().getConfiguration());
     }
   }
-
-  /**
-   * The procedure could be restarted from a different machine. If the variable is null, we need to
-   * retrieve it.
-   * @return traceEnabled
-   */
-  private Boolean isTraceEnabled() {
-    if (traceEnabled == null) {
-      traceEnabled = LOG.isTraceEnabled();
-    }
-    return traceEnabled;
-  }
 }