[MINOR] Fix assigning to configuration more times

hudi-client/src/test/java/org/apache/hudi/index/TestHBaseQPSResourceAllocator.java

@@ -116,7 +116,7 @@ private HoodieWriteConfig.Builder getConfigBuilder(HoodieHBaseIndexConfig hoodie
 
   private HoodieHBaseIndexConfig getConfigWithResourceAllocator(Option<String> resourceAllocatorClass) {
     HoodieHBaseIndexConfig.Builder builder = new HoodieHBaseIndexConfig.Builder()
-        .hbaseZkPort(Integer.valueOf(hbaseConfig.get("hbase.zookeeper.property.clientPort")))
+        .hbaseZkPort(Integer.parseInt(hbaseConfig.get("hbase.zookeeper.property.clientPort")))
         .hbaseZkQuorum(hbaseConfig.get("hbase.zookeeper.quorum")).hbaseTableName(tableName).hbaseIndexGetBatchSize(100);
     if (resourceAllocatorClass.isPresent()) {
       builder.withQPSResourceAllocatorType(resourceAllocatorClass.get());

hudi-client/src/test/java/org/apache/hudi/index/TestHbaseIndex.java

@@ -418,7 +418,7 @@ private HoodieWriteConfig.Builder getConfigBuilder() {
         .forTable("test-trip-table")
         .withIndexConfig(HoodieIndexConfig.newBuilder().withIndexType(HoodieIndex.IndexType.HBASE)
             .withHBaseIndexConfig(new HoodieHBaseIndexConfig.Builder()
-                .hbaseZkPort(Integer.valueOf(hbaseConfig.get("hbase.zookeeper.property.clientPort")))
+                .hbaseZkPort(Integer.parseInt(hbaseConfig.get("hbase.zookeeper.property.clientPort")))
                 .hbaseZkQuorum(hbaseConfig.get("hbase.zookeeper.quorum")).hbaseTableName(tableName)
                 .hbaseIndexGetBatchSize(100).build())
             .build());

hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/realtime/HoodieParquetRealtimeInputFormat.java

@@ -188,15 +188,11 @@ private static Configuration addProjectionField(Configuration conf, String field
     return conf;
   }
 
-  private static Configuration addRequiredProjectionFields(Configuration configuration) {
+  private static void addRequiredProjectionFields(Configuration configuration) {
     // Need this to do merge records in HoodieRealtimeRecordReader
-    configuration =
-        addProjectionField(configuration, HoodieRecord.RECORD_KEY_METADATA_FIELD, HOODIE_RECORD_KEY_COL_POS);
-    configuration =
-        addProjectionField(configuration, HoodieRecord.COMMIT_TIME_METADATA_FIELD, HOODIE_COMMIT_TIME_COL_POS);
-    configuration =
-        addProjectionField(configuration, HoodieRecord.PARTITION_PATH_METADATA_FIELD, HOODIE_PARTITION_PATH_COL_POS);
-    return configuration;
+    addProjectionField(configuration, HoodieRecord.RECORD_KEY_METADATA_FIELD, HOODIE_RECORD_KEY_COL_POS);
+    addProjectionField(configuration, HoodieRecord.COMMIT_TIME_METADATA_FIELD, HOODIE_COMMIT_TIME_COL_POS);
+    addProjectionField(configuration, HoodieRecord.PARTITION_PATH_METADATA_FIELD, HOODIE_PARTITION_PATH_COL_POS);
   }
 
   /**
@@ -205,53 +201,54 @@ private static Configuration addRequiredProjectionFields(Configuration configura
    * e.g. ",2,0,3" and will cause an error. Actually this method is a temporary solution because the real bug is from
    * Hive. Hive has fixed this bug after 3.0.0, but the version before that would still face this problem. (HIVE-22438)
    */
-  private static Configuration cleanProjectionColumnIds(Configuration conf) {
+  private static void cleanProjectionColumnIds(Configuration conf) {
     String columnIds = conf.get(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR);
     if (!columnIds.isEmpty() && columnIds.charAt(0) == ',') {
       conf.set(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR, columnIds.substring(1));
       if (LOG.isDebugEnabled()) {
         LOG.debug("The projection Ids: {" + columnIds + "} start with ','. First comma is removed");
       }
     }
-    return conf;
   }
 
   @Override
-  public RecordReader<NullWritable, ArrayWritable> getRecordReader(final InputSplit split, final JobConf job,
+  public RecordReader<NullWritable, ArrayWritable> getRecordReader(final InputSplit split, final JobConf jobConf,
       final Reporter reporter) throws IOException {
     // Hive on Spark invokes multiple getRecordReaders from different threads in the same spark task (and hence the
     // same JVM) unlike Hive on MR. Due to this, accesses to JobConf, which is shared across all threads, is at the
     // risk of experiencing race conditions. Hence, we synchronize on the JobConf object here. There is negligible
     // latency incurred here due to the synchronization since get record reader is called once per spilt before the
     // actual heavy lifting of reading the parquet files happen.
-    if (job.get(HOODIE_READ_COLUMNS_PROP) == null) {
-      synchronized (job) {
+    if (jobConf.get(HOODIE_READ_COLUMNS_PROP) == null) {
+      synchronized (jobConf) {
         LOG.info(
-            "Before adding Hoodie columns, Projections :" + job.get(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR)
-                + ", Ids :" + job.get(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR));
-        if (job.get(HOODIE_READ_COLUMNS_PROP) == null) {
+            "Before adding Hoodie columns, Projections :" + jobConf.get(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR)
+                + ", Ids :" + jobConf.get(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR));
+        if (jobConf.get(HOODIE_READ_COLUMNS_PROP) == null) {
           // Hive (across all versions) fails for queries like select count(`_hoodie_commit_time`) from table;
           // In this case, the projection fields gets removed. Looking at HiveInputFormat implementation, in some cases
           // hoodie additional projection columns are reset after calling setConf and only natural projections
           // (one found in select queries) are set. things would break because of this.
           // For e:g _hoodie_record_key would be missing and merge step would throw exceptions.
           // TO fix this, hoodie columns are appended late at the time record-reader gets built instead of construction
           // time.
-          this.conf = cleanProjectionColumnIds(job);
-          this.conf = addRequiredProjectionFields(job);
+          cleanProjectionColumnIds(jobConf);
+          addRequiredProjectionFields(jobConf);
+
+          this.conf = jobConf;
           this.conf.set(HOODIE_READ_COLUMNS_PROP, "true");
         }
       }
     }
 
-    LOG.info("Creating record reader with readCols :" + job.get(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR)
-        + ", Ids :" + job.get(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR));
+    LOG.info("Creating record reader with readCols :" + jobConf.get(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR)
+        + ", Ids :" + jobConf.get(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR));
     // sanity check
     Preconditions.checkArgument(split instanceof HoodieRealtimeFileSplit,
         "HoodieRealtimeRecordReader can only work on HoodieRealtimeFileSplit and not with " + split);
 
-    return new HoodieRealtimeRecordReader((HoodieRealtimeFileSplit) split, job,
-        super.getRecordReader(split, job, reporter));
+    return new HoodieRealtimeRecordReader((HoodieRealtimeFileSplit) split, jobConf,
+        super.getRecordReader(split, jobConf, reporter));
   }
 
   @Override