启动一直报错

SLF4J: Found binding in [jar:file:/data/src/dr-elephant-2.1.7/lib/ch.qos.logback.logback-classic-1.0.13.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/data/src/dr-elephant-2.1.7/lib/org.slf4j.slf4j-simple-1.6.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/data/src/dr-elephant-2.1.7/lib/org.slf4j.slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/data/src/hadoop-2.8.4/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
[info] play - database [default] connected at jdbc:mysql://xxxx:3306/drelephant?characterEncoding=UTF-8
[error] c.j.b.ConnectionHandle - Database access problem. Killing off this connection and all remaining connections in the connection pool. SQL State = HY000
Oops, cannot start the server.
java.sql.SQLException: Connection is closed!
at com.jolbox.bonecp.ConnectionHandle.checkClosed(ConnectionHandle.java:459)
at com.jolbox.bonecp.ConnectionHandle.prepareStatement(ConnectionHandle.java:1011)
at play.api.db.evolutions.Evolutions$.prepare(Evolutions.scala:125)
at play.api.db.evolutions.Evolutions$.updateLastProblem$1(Evolutions.scala:244)
at play.api.db.evolutions.Evolutions$.applyScript(Evolutions.scala:271)
at play.api.db.evolutions.EvolutionsPlugin$$anonfun$onStart$1$$anonfun$apply$1.apply$mcV$sp(Evolutions.scala:472)
at play.api.db.evolutions.EvolutionsPlugin.withLock(Evolutions.scala:507)
at play.api.db.evolutions.EvolutionsPlugin$$anonfun$onStart$1.apply(Evolutions.scala:461)
at play.api.db.evolutions.EvolutionsPlugin$$anonfun$onStart$1.apply(Evolutions.scala:459)
at scala.collection.immutable.List.foreach(List.scala:318)
at play.api.db.evolutions.EvolutionsPlugin.onStart(Evolutions.scala:459)
at play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.scala:88)
at play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.scala:88)
at scala.collection.immutable.List.foreach(List.scala:318)
at play.api.Play$$anonfun$start$1.apply$mcV$sp(Play.scala:88)
at play.api.Play$$anonfun$start$1.apply(Play.scala:88)
at play.api.Play$$anonfun$start$1.apply(Play.scala:88)
at play.utils.Threads$.withContextClassLoader(Threads.scala:18)
at play.api.Play$.start(Play.scala:87)
at play.core.StaticApplication.<init>(ApplicationProvider.scala:52)
at play.core.server.NettyServer$.createServer(NettyServer.scala:243)
at play.core.server.NettyServer$$anonfun$main$3.apply(NettyServer.scala:279)
at play.core.server.NettyServer$$anonfun$main$3.apply(NettyServer.scala:274)
at scala.Option.map(Option.scala:145)
at play.core.server.NettyServer$.main(NettyServer.scala:274)
at play.core.server.NettyServer.main(NettyServer.scala)

修改app-conf/elephant.conf

第一次启动如下配置,数据库创建了表

# jvm_args="-Devolutionplugin=enabled -DapplyEvolutions.default=true -mem 1024 -J-Xloggc:$project_root../logs/elephant/dr-gc.`date +'%Y%m%d%H%M'` -J-XX:+PrintGCDetails"
jvm_args="-Devolutionplugin=enabled -DapplyEvolutions.default=true -mem 1024 -J-Xloggc:$project_root../logs/elephant/dr-gc.`date +'%Y%m%d%H%M'` -J-XX:+PrintGCDetails"

mysql> use drelephant;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> show tables;
+-----------------------------------+
| Tables_in_drelephant              |
+-----------------------------------+
| backfill_info                     |
| flow_definition                   |
| flow_execution                    |
| job_definition                    |
| job_execution                     |
| job_saved_state                   |
| job_suggested_param_set           |
| job_suggested_param_value         |
| play_evolutions                   |
| tuning_algorithm                  |
| tuning_job_definition             |
| tuning_job_execution_param_set    |
| tuning_parameter                  |
| yarn_app_heuristic_result         |
| yarn_app_heuristic_result_details |
| yarn_app_result                   |
+-----------------------------------+
16 rows in set (0.00 sec)

后面启动要将参数设置为disabled

-Devolutionplugin=disabled