[MINOR][CORE][SQL][DOCS] Typo fixes

## What changes were proposed in this pull request?

Typo fixes

## How was this patch tested?

Local build. Awaiting the official build.

Author: Jacek Laskowski <jacek@japila.pl>

Closes #16144 from jaceklaskowski/typo-fixes.

12 files changed, 16 insertions, 18 deletions

diff --git a/core/src/main/scala/org/apache/spark/MapOutputTracker.scala b/core/src/main/scala/org/apache/spark/MapOutputTracker.scala
index 7f8f0f5131..6f5c31d7ab 100644
--- a/core/src/main/scala/org/apache/spark/MapOutputTracker.scala
+++ b/core/src/main/scala/org/apache/spark/MapOutputTracker.scala
@@ -322,7 +322,7 @@ private[spark] class MapOutputTrackerMaster(conf: SparkConf,
   if (minSizeForBroadcast > maxRpcMessageSize) {
     val msg = s"spark.shuffle.mapOutput.minSizeForBroadcast ($minSizeForBroadcast bytes) must " +
       s"be <= spark.rpc.message.maxSize ($maxRpcMessageSize bytes) to prevent sending an rpc " +
-      "message that is to large."
+      "message that is too large."
     logError(msg)
     throw new IllegalArgumentException(msg)
   }
diff --git a/core/src/main/scala/org/apache/spark/SparkContext.scala b/core/src/main/scala/org/apache/spark/SparkContext.scala
index b42820a8ee..02c009cdb5 100644
--- a/core/src/main/scala/org/apache/spark/SparkContext.scala
+++ b/core/src/main/scala/org/apache/spark/SparkContext.scala
@@ -2570,8 +2570,8 @@ object SparkContext extends Logging {
     val serviceLoaders =
       ServiceLoader.load(classOf[ExternalClusterManager], loader).asScala.filter(_.canCreate(url))
     if (serviceLoaders.size > 1) {
-      throw new SparkException(s"Multiple Cluster Managers ($serviceLoaders) registered " +
-          s"for the url $url:")
+      throw new SparkException(
+        s"Multiple external cluster managers registered for the url $url: $serviceLoaders")
     }
     serviceLoaders.headOption
   }
diff --git a/core/src/main/scala/org/apache/spark/deploy/history/HistoryServerArguments.scala b/core/src/main/scala/org/apache/spark/deploy/history/HistoryServerArguments.scala
index 2eddb5ff54..080ba12c2f 100644
--- a/core/src/main/scala/org/apache/spark/deploy/history/HistoryServerArguments.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/history/HistoryServerArguments.scala
@@ -24,7 +24,7 @@ import org.apache.spark.internal.Logging
 import org.apache.spark.util.Utils
 
 /**
- * Command-line parser for the master.
+ * Command-line parser for the [[HistoryServer]].
  */
 private[history] class HistoryServerArguments(conf: SparkConf, args: Array[String])
   extends Logging {
diff --git a/core/src/main/scala/org/apache/spark/internal/config/package.scala b/core/src/main/scala/org/apache/spark/internal/config/package.scala
index 78aed4fb58..fb62682b6c 100644
--- a/core/src/main/scala/org/apache/spark/internal/config/package.scala
+++ b/core/src/main/scala/org/apache/spark/internal/config/package.scala
@@ -198,7 +198,7 @@ package object config {
     .createWithDefault(0)
 
   private[spark] val DRIVER_BLOCK_MANAGER_PORT = ConfigBuilder("spark.driver.blockManager.port")
-    .doc("Port to use for the block managed on the driver.")
+    .doc("Port to use for the block manager on the driver.")
     .fallbackConf(BLOCK_MANAGER_PORT)
 
   private[spark] val IGNORE_CORRUPT_FILES = ConfigBuilder("spark.files.ignoreCorruptFiles")
diff --git a/core/src/main/scala/org/apache/spark/rdd/RDD.scala b/core/src/main/scala/org/apache/spark/rdd/RDD.scala
index d285e917b8..374abccf6a 100644
--- a/core/src/main/scala/org/apache/spark/rdd/RDD.scala
+++ b/core/src/main/scala/org/apache/spark/rdd/RDD.scala
@@ -1746,7 +1746,7 @@ abstract class RDD[T: ClassTag](
 
   /**
    * Clears the dependencies of this RDD. This method must ensure that all references
-   * to the original parent RDDs is removed to enable the parent RDDs to be garbage
+   * to the original parent RDDs are removed to enable the parent RDDs to be garbage
    * collected. Subclasses of RDD may override this method for implementing their own cleaning
    * logic. See [[org.apache.spark.rdd.UnionRDD]] for an example.
    */
diff --git a/core/src/main/scala/org/apache/spark/rpc/RpcCallContext.scala b/core/src/main/scala/org/apache/spark/rpc/RpcCallContext.scala
index f527ec86ab..117f51c5b8 100644
--- a/core/src/main/scala/org/apache/spark/rpc/RpcCallContext.scala
+++ b/core/src/main/scala/org/apache/spark/rpc/RpcCallContext.scala
@@ -18,7 +18,7 @@
 package org.apache.spark.rpc
 
 /**
- * A callback that [[RpcEndpoint]] can use it to send back a message or failure. It's thread-safe
+ * A callback that [[RpcEndpoint]] can use to send back a message or failure. It's thread-safe
  * and can be called in any thread.
  */
 private[spark] trait RpcCallContext {
diff --git a/docs/monitoring.md b/docs/monitoring.md
index 2eef4568d0..7a1de52668 100644
--- a/docs/monitoring.md
+++ b/docs/monitoring.md
@@ -44,10 +44,8 @@ The spark jobs themselves must be configured to log events, and to log them to t
 writable directory. For example, if the server was configured with a log directory of
 `hdfs://namenode/shared/spark-logs`, then the client-side options would be:
 
-```
-spark.eventLog.enabled true
-spark.eventLog.dir hdfs://namenode/shared/spark-logs
-```
+    spark.eventLog.enabled true
+    spark.eventLog.dir hdfs://namenode/shared/spark-logs
 
 The history server can be configured as follows:
 
diff --git a/sql/catalyst/src/main/java/org/apache/spark/sql/streaming/OutputMode.java b/sql/catalyst/src/main/java/org/apache/spark/sql/streaming/OutputMode.java
index 49a18df2c7..a515c1a109 100644
--- a/sql/catalyst/src/main/java/org/apache/spark/sql/streaming/OutputMode.java
+++ b/sql/catalyst/src/main/java/org/apache/spark/sql/streaming/OutputMode.java
@@ -46,7 +46,7 @@ public class OutputMode {
 
   /**
    * OutputMode in which all the rows in the streaming DataFrame/Dataset will be written
-   * to the sink every time these is some updates. This output mode can only be used in queries
+   * to the sink every time there are some updates. This output mode can only be used in queries
    * that contain aggregations.
    *
    * @since 2.0.0
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/InternalRow.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/InternalRow.scala
index f498e071b5..256f64e320 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/InternalRow.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/InternalRow.scala
@@ -21,7 +21,7 @@ import org.apache.spark.sql.catalyst.expressions._
 import org.apache.spark.sql.types.{DataType, Decimal, StructType}
 
 /**
- * An abstract class for row used internal in Spark SQL, which only contain the columns as
+ * An abstract class for row used internally in Spark SQL, which only contains the columns as
  * internal types.
  */
 abstract class InternalRow extends SpecializedGetters with Serializable {
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalog.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalog.scala
index 4b8cac8f32..78897daec8 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalog.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalog.scala
@@ -22,7 +22,7 @@ import org.apache.spark.sql.catalyst.expressions.Expression
 
 
 /**
- * Interface for the system catalog (of columns, partitions, tables, and databases).
+ * Interface for the system catalog (of functions, partitions, tables, and databases).
  *
  * This is only used for non-temporary items, and implementations must be thread-safe as they
  * can be accessed in multiple threads. This is an external catalog because it is expected to
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala
index 221f830aa8..b93a5d0b7a 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala
@@ -70,9 +70,9 @@ abstract class Expression extends TreeNode[Expression] {
    * children.
    *
    * Note that this means that an expression should be considered as non-deterministic if:
-   * - if it relies on some mutable internal state, or
-   * - if it relies on some implicit input that is not part of the children expression list.
-   * - if it has non-deterministic child or children.
+   * - it relies on some mutable internal state, or
+   * - it relies on some implicit input that is not part of the children expression list.
+   * - it has non-deterministic child or children.
    *
    * An example would be `SparkPartitionID` that relies on the partition id returned by TaskContext.
    * By default leaf expressions are deterministic as Nil.forall(_.deterministic) returns true.
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala
index a8aa1e7255..fc323693a2 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala
@@ -930,7 +930,7 @@ case class InitializeJavaBean(beanInstance: Expression, setters: Map[String, Exp
 /**
  * Asserts that input values of a non-nullable child expression are not null.
  *
- * Note that there are cases where `child.nullable == true`, while we still needs to add this
+ * Note that there are cases where `child.nullable == true`, while we still need to add this
  * assertion.  Consider a nullable column `s` whose data type is a struct containing a non-nullable
  * `Int` field named `i`.  Expression `s.i` is nullable because `s` can be null.  However, for all
  * non-null `s`, `s.i` can't be null.