Merge branch 'liuzhe' into 'master'

update checkout time from 1s to 5m

See merge request !2

ml_c_et_pe_preciseexposure_dimen_d_rt/src/main/java/com/gmei/streaming/PreciseExposureStreaming.java

@@ -92,8 +92,8 @@ public class PreciseExposureStreaming {
         /*
         checkpoint设置
          */
-        //start a checkpoint every 1000 ms
-        env.enableCheckpointing(1000);
+        //start a checkpoint every 300000 ms(时间设置太短导致checkout还未完成就已超时，目前设置为5分钟)
+        env.enableCheckpointing(300000);
         //set mode to exactly-once (this is the default)
         env.getCheckpointConfig().setCheckpointingMode(CheckpointingMode.EXACTLY_ONCE);
         //make sure 500 ms of progress happen between checkpoints