Update arrow and parquet-cpp. (#1875)

* Update arrow.

* Fix bug.

* Cherry-pick commit for fixing parquet segfault.

* Update arrow and revert auto-releasing buffer commit.

* Remove parquet cherry-pick.

thirdparty/scripts/build_arrow.sh

@@ -44,10 +44,14 @@ if [[ ! -d $TP_DIR/../python/ray/pyarrow_files/pyarrow ]]; then
 
     pushd $TP_DIR/build/arrow
     git fetch origin master
-    # The PR for this commit is https://github.com/apache/arrow/pull/1581. We
+    # The PR for this commit is https://github.com/apache/arrow/pull/1880. We
     # include the link here to make it easier to find the right commit because
     # Arrow often rewrites git history and invalidates certain commits.
-    git checkout 46aa99e9843ac0148357bb36a9235cfd48903e73
+    git checkout 4009b62086dfa43a4fd8bfa714772716e6531c6f
+
+    # Revert https://github.com/apache/arrow/pull/1807, which unfortunately
+    # introduces the issue in https://issues.apache.org/jira/browse/ARROW-2448.
+    git revert --no-commit cf396867df6f1f93948c69ce10ceb0f95e399242
 
     cd cpp
     if [ ! -d "build" ]; then

thirdparty/scripts/build_parquet.sh

@@ -15,7 +15,7 @@ if [ ! -d $TP_DIR/build/parquet-cpp ]; then
   git clone https://github.com/apache/parquet-cpp.git "$TP_DIR/build/parquet-cpp"
   pushd $TP_DIR/build/parquet-cpp
   git fetch origin master
-  git checkout 76388ea4eb8b23656283116bc656b0c8f5db093b
+  git checkout 0875e43010af485e1c0b506d77d7e0edc80c66cc
 
   if [ "$unamestr" == "Darwin" ]; then
     OPENSSL_ROOT_DIR=$OPENSSL_DIR \