[MINOR] Fix typos in Spark client related classes

hudi-client/hudi-spark-client/src/main/java/org/apache/hudi/client/clustering/run/strategy/SingleSparkJobExecutionStrategy.java

@@ -136,7 +136,7 @@ private Stream<WriteStatus> runClusteringForGroup(ClusteringGroupInfo clustering
   /**
    * Execute clustering to write inputRecords into new files as defined by rules in strategy parameters.
    * The number of new file groups created is bounded by numOutputGroups.
-   * Note that commit is not done as part of strategy. commit is callers responsibility.
+   * Note that commit is not done as part of strategy. Commit is callers responsibility.
    */
   public abstract Iterator<List<WriteStatus>> performClusteringWithRecordsIterator(final Iterator<HoodieRecord<T>> records, final int numOutputGroups,
                                                                                    final String instantTime,

hudi-client/hudi-spark-client/src/main/java/org/apache/hudi/client/utils/SparkInternalSchemaConverter.java

@@ -81,7 +81,7 @@ private SparkInternalSchemaConverter() {
   public static final String HOODIE_VALID_COMMITS_LIST = "hoodie.valid.commits.list";
 
   /**
-   * Converts a spark schema to an hudi internal schema. Fields without IDs are kept and assigned fallback IDs.
+   * Convert a spark schema to an hudi internal schema. Fields without IDs are kept and assigned fallback IDs.
    *
    * @param sparkSchema a spark schema
    * @return a matching internal schema for the provided spark schema
@@ -157,7 +157,7 @@ public static Type buildTypeFromStructType(DataType sparkType, Boolean firstVisi
   }
 
   /**
-   * Converts Spark schema to Hudi internal schema, and prune fields.
+   * Convert Spark schema to Hudi internal schema, and prune fields.
    * Fields without IDs are kept and assigned fallback IDs.
    *
    * @param sparkSchema a pruned spark schema

hudi-client/hudi-spark-client/src/main/java/org/apache/hudi/client/utils/SparkValidatorUtils.java

@@ -50,7 +50,7 @@
 import scala.collection.JavaConverters;
 
 /**
- * Spark validator utils to verify and run any precommit validators configured.
+ * Spark validator utils to verify and run any pre-commit validators configured.
  */
 public class SparkValidatorUtils {
   private static final Logger LOG = LogManager.getLogger(BaseSparkCommitActionExecutor.class);

hudi-common/src/main/java/org/apache/hudi/common/table/log/block/HoodieAvroDataBlock.java

@@ -308,7 +308,7 @@ public byte[] getBytes(Schema schema) throws IOException {
     ByteArrayOutputStream baos = new ByteArrayOutputStream();
     DataOutputStream output = new DataOutputStream(baos);
 
-    // 2. Compress and Write schema out
+    // 1. Compress and Write schema out
     byte[] schemaContent = compress(schema.toString());
     output.writeInt(schemaContent.length);
     output.write(schemaContent);
@@ -318,10 +318,10 @@ public byte[] getBytes(Schema schema) throws IOException {
       recordItr.forEachRemaining(records::add);
     }
 
-    // 3. Write total number of records
+    // 2. Write total number of records
     output.writeInt(records.size());
 
-    // 4. Write the records
+    // 3. Write the records
     Iterator<IndexedRecord> itr = records.iterator();
     while (itr.hasNext()) {
       IndexedRecord s = itr.next();