This is the log:

2017-09-15 12:47:49,143 WARN  org.apache.hadoop.util.NativeCodeLoader                      
- Unable to load native-hadoop library for your platform... using
builtin-java classe$
2017-09-15 12:47:49,257 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -
--------------------------------------------------------------------------------
2017-09-15 12:47:49,257 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  Starting
TaskManager (Version: 1.3.2, Rev:0399bee, Date:03.08.2017 @ 10:23:11 UTC)
2017-09-15 12:47:49,257 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  Current
user: giordano
2017-09-15 12:47:49,257 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  JVM: Java
HotSpot(TM) 64-Bit Server VM - Oracle Corporation - 1.8/25.131-b11
2017-09-15 12:47:49,258 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  Maximum
heap size: 502 MiBytes
2017-09-15 12:47:49,258 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  JAVA_HOME:
/usr/lib/jvm/java-8-oracle
2017-09-15 12:47:49,261 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  Hadoop
version: 2.7.2
2017-09-15 12:47:49,261 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  JVM
Options:
2017-09-15 12:47:49,261 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -    
-XX:+UseG1GC
2017-09-15 12:47:49,261 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -    
-Dlog.file=/home/giordano/flink-1.3.2/log/flink-giordano-taskmanager-0-giordano$
2017-09-15 12:47:49,261 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -    
-Dlog4j.configuration=file:/home/giordano/flink-1.3.2/conf/log4j.properties
2017-09-15 12:47:49,261 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -    
-Dlogback.configurationFile=file:/home/giordano/flink-1.3.2/conf/logback.xml
2017-09-15 12:47:49,262 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  Program
Arguments:
2017-09-15 12:47:49,262 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -    
--configDir
2017-09-15 12:47:49,262 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -    
/home/giordano/flink-1.3.2/conf
2017-09-15 12:47:49,262 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -  Classpath:
/home/giordano/flink-1.3.2/lib/flink-python_2.11-1.3.2.jar:/home/giorda$
2017-09-15 12:47:49,262 INFO
org.apache.flink.runtime.taskmanager.TaskManager              -
--------------------------------------------------------------------------------
2017-09-15 12:47:49,263 INFO
org.apache.flink.runtime.taskmanager.TaskManager              - Registered
UNIX signal handlers for [TERM, HUP, INT]
2017-09-15 12:47:49,269 INFO
org.apache.flink.runtime.taskmanager.TaskManager              - Maximum
number of open file descriptors is 65536
2017-09-15 12:47:49,295 INFO
org.apache.flink.runtime.taskmanager.TaskManager              - Loading
configuration from /home/giordano/flink-1.3.2/conf
2017-09-15 12:47:49,298 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: env.java.home, /usr/lib/jvm/java-8-oracle
2017-09-15 12:47:49,299 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: jobmanager.rpc.address, localhost
2017-09-15 12:47:49,299 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: jobmanager.rpc.port, 6123
2017-09-15 12:47:49,299 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: jobmanager.heap.mb, 512
2017-09-15 12:47:49,299 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: taskmanager.numberOfTaskSlots, 2
2017-09-15 12:47:49,299 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: taskmanager.memory.preallocate, false
2017-09-15 12:47:49,300 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: jobmanager.web.port, 8081
2017-09-15 12:47:49,300 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: state.backend, filesystem
2017-09-15 12:47:49,300 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: state.backend.fs.checkpointdir, file:///home/flink-$
2017-09-15 12:47:49,311 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: env.java.home, /usr/lib/jvm/java-8-oracle
2017-09-15 12:47:49,312 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: jobmanager.rpc.address, localhost
2017-09-15 12:47:49,312 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: jobmanager.rpc.port, 6123
2017-09-15 12:47:49,312 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: jobmanager.heap.mb, 512
2017-09-15 12:47:49,312 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: taskmanager.numberOfTaskSlots, 2
2017-09-15 12:47:49,312 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: taskmanager.memory.preallocate, false
2017-09-15 12:47:49,313 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: jobmanager.web.port, 8081
2017-09-15 12:47:49,313 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: state.backend, filesystem
2017-09-15 12:47:49,313 INFO
org.apache.flink.configuration.GlobalConfiguration            - Loading
configuration property: state.backend.fs.checkpointdir, file:///home/flink-$
2017-09-15 12:
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