add ci of plasma java client

Author: salah-man

.travis.yml

@@ -130,6 +130,8 @@ matrix:
     env: ARROW_TEST_GROUP=integration
     jdk: openjdk8
     env:
+    - ARROW_TRAVIS_PLASMA=1
+    - ARROW_TRAVIS_PLASMA_JAVA_CLIENT=1
     - CC="clang-6.0"
     - CXX="clang++-6.0"
     before_script:
@@ -141,6 +143,7 @@ matrix:
     - $TRAVIS_BUILD_DIR/ci/travis_before_script_cpp.sh
     script:
     - $TRAVIS_BUILD_DIR/ci/travis_script_integration.sh
+    - $TRAVIS_BUILD_DIR/ci/travis_script_plasma_java_client.sh
   # NodeJS
   - language: node_js
     os: linux

ci/travis_before_script_cpp.sh

@@ -74,6 +74,10 @@ if [ $ARROW_TRAVIS_PLASMA == "1" ]; then
   CMAKE_COMMON_FLAGS="$CMAKE_COMMON_FLAGS -DARROW_PLASMA=ON"
 fi
 
+if [ $ARROW_TRAVIS_PLASMA_JAVA_CLIENT == "1" ]; then
+  CMAKE_COMMON_FLAGS="$CMAKE_COMMON_FLAGS -DARROW_PLASMA_JAVA_CLIENT=ON"
+fi
+
 if [ $ARROW_TRAVIS_ORC == "1" ]; then
   CMAKE_COMMON_FLAGS="$CMAKE_COMMON_FLAGS -DARROW_ORC=ON"
 fi

ci/travis_script_plasma_java_client.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+set -e
+
+PLASMA_JAVA_DIR=${TRAVIS_BUILD_DIR}/java/plasma
+
+pushd $PLASMA_JAVA_DIR
+
+mvn clean install
+export PLASMA_STORE=${TRAVIS_BUILD_DIR}/cpp-install/bin/plasma_store
+java -cp target/test-classes:target/classes -Djava.library.path=${TRAVIS_BUILD_DIR}/cpp-build/debug/ org.apache.arrow.plasma.PlasmaClientTest
+
+popd

java/plasma/src/test/java/org/apache/arrow/plasma/PlasmaClientTest.java

@@ -35,14 +35,21 @@ public class PlasmaClientTest {
 
 
     public PlasmaClientTest() throws Exception{
-        String plasmaStorePath = System.getenv("PLASMA_STORE");
-        if(plasmaStorePath == null) {
-            throw new Exception("Please set plasma store path in env PLASMA_STORE");
+        try {
+            String plasmaStorePath = System.getenv("PLASMA_STORE");
+            if(plasmaStorePath == null) {
+                throw new Exception("Please set plasma store path in env PLASMA_STORE");
+            }
+
+            this.startObjectStore(plasmaStorePath);
+            System.loadLibrary("plasma_java");
+            pLink = new PlasmaClient(this.getStoreAddress(), "", 0);
+        }
+        catch (Throwable t) {
+            cleanup();
+            throw t;
         }
 
-        this.startObjectStore(plasmaStorePath);
-        System.loadLibrary("plasma_java");
-        pLink = new PlasmaClient(this.getStoreAddress(), "", 0);
     }
 
     private Process startProcess(String[] cmd) {