Writable[] writableArr = new Writable[2];
writableArr[0] = new LongWritable(3L);
writableArr[1] = new LongWritable(5L);
ArrayWritable arrWritable = new ArrayWritable(LongWritable.class);
arrWritable.set(writableArr);
syncClient.storeInformation(writeKey, arrWritable, true, null);
String writePath = "checkpoint/job_checkpttest_0001/3/1";
FSDataOutputStream out = dfs.create(new Path(writePath));
for (int i = 0; i < 5; ++i) {
out.writeUTF(txtMessage.getClass().getCanonicalName());