fix typos in some code and comment (#10139)

Summary:
Minor issue, I just found a few typos on db_test and column_family while reading the code. And I have this PR opened to contribute.  :)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10139

Reviewed By: ajkr

Differential Revision: D38007098

Pulled By: jay-zhuang

fbshipit-source-id: 511947b32424c34348184691216640f32c410fb1

db/column_family.cc

@@ -786,13 +786,13 @@ namespace {
 std::unique_ptr<WriteControllerToken> SetupDelay(
     WriteController* write_controller, uint64_t compaction_needed_bytes,
     uint64_t prev_compaction_need_bytes, bool penalize_stop,
-    bool auto_comapctions_disabled) {
+    bool auto_compactions_disabled) {
   const uint64_t kMinWriteRate = 16 * 1024u;  // Minimum write rate 16KB/s.
 
   uint64_t max_write_rate = write_controller->max_delayed_write_rate();
   uint64_t write_rate = write_controller->delayed_write_rate();
 
-  if (auto_comapctions_disabled) {
+  if (auto_compactions_disabled) {
     // When auto compaction is disabled, always use the value user gave.
     write_rate = max_write_rate;
   } else if (write_controller->NeedsDelay() && max_write_rate > kMinWriteRate) {

db/column_family_test.cc

@@ -1116,7 +1116,7 @@ TEST_P(ColumnFamilyTest, DifferentWriteBufferSizes) {
   CreateColumnFamilies({"one", "two", "three"});
   ColumnFamilyOptions default_cf, one, two, three;
   // setup options. all column families have max_write_buffer_number setup to 10
-  // "default" -> 100KB memtable, start flushing immediatelly
+  // "default" -> 100KB memtable, start flushing immediately
   // "one" -> 200KB memtable, start flushing with two immutable memtables
   // "two" -> 1MB memtable, start flushing with three immutable memtables
   // "three" -> 90KB memtable, start flushing with four immutable memtables

db/db_test.cc

@@ -492,7 +492,7 @@ TEST_F(DBTest, PutSingleDeleteGet) {
     ASSERT_EQ("v2", Get(1, "foo2"));
     ASSERT_OK(SingleDelete(1, "foo"));
     ASSERT_EQ("NOT_FOUND", Get(1, "foo"));
-    // Skip FIFO and universal compaction beccause they do not apply to the test
+    // Skip FIFO and universal compaction because they do not apply to the test
     // case. Skip MergePut because single delete does not get removed when it
     // encounters a merge.
   } while (ChangeOptions(kSkipFIFOCompaction | kSkipUniversalCompaction |
@@ -645,7 +645,7 @@ TEST_F(DBTest, SingleDeleteFlush) {
 
     ASSERT_EQ("NOT_FOUND", Get(1, "bar"));
     ASSERT_EQ("NOT_FOUND", Get(1, "foo"));
-    // Skip FIFO and universal compaction beccause they do not apply to the test
+    // Skip FIFO and universal compaction beccaus they do not apply to the test
     // case. Skip MergePut because single delete does not get removed when it
     // encounters a merge.
   } while (ChangeOptions(kSkipFIFOCompaction | kSkipUniversalCompaction |
@@ -668,7 +668,7 @@ TEST_F(DBTest, SingleDeletePutFlush) {
     ASSERT_OK(Flush(1));
 
     ASSERT_EQ("[ ]", AllEntriesFor("a", 1));
-    // Skip FIFO and universal compaction beccause they do not apply to the test
+    // Skip FIFO and universal compaction beccaus they do not apply to the test
     // case. Skip MergePut because single delete does not get removed when it
     // encounters a merge.
   } while (ChangeOptions(kSkipFIFOCompaction | kSkipUniversalCompaction |
@@ -1993,7 +1993,7 @@ TEST_F(DBTest, UnremovableSingleDelete) {
     ASSERT_EQ("first", Get(1, "foo", snapshot));
     ASSERT_EQ("NOT_FOUND", Get(1, "foo"));
     db_->ReleaseSnapshot(snapshot);
-    // Skip FIFO and universal compaction beccause they do not apply to the test
+    // Skip FIFO and universal compaction because they do not apply to the test
     // case. Skip MergePut because single delete does not get removed when it
     // encounters a merge.
   } while (ChangeOptions(kSkipFIFOCompaction | kSkipUniversalCompaction |