我有一个shell脚本，该脚本使用spark-submit启动spark应用程序。
我今天发现火花开始非常缓慢。日志如下
18/10/07 06:00:53 WARN SparkConf: In Spark 1.0 and later spark.local.dir will be overridden by the value set by the cluster manager (via SPARK_LOCAL_DIRS in mesos/standalone and LOCAL_DIRS in YARN).
18/10/07 06:00:53 WARN SparkConf: Detected deprecated memory fraction settings: [spark.shuffle.memoryFraction, spark.storage.memoryFraction, spark.storage.unrollFraction]. As of Spark 1.6, execution and storage memory management are unified. All memory fractions used in the old model are now deprecated and no longer read. If you wish to use the old memory management, you may explicitly enable `spark.memory.useLegacyMode` (not recommended).
18/10/07 06:00:54 INFO log: Logging initialized @47766ms
18/10/07 06:00:54 INFO Server: jetty-9.2.z-SNAPSHOT
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@4a481728{/jobs,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@4ace284d{/jobs/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@77fa9381{/jobs/job,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@76d72b5b{/jobs/job/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@7cac93fe{/stages,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@479b5066{/stages/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@64deb58f{/stages/stage,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@2b1cd7bc{/stages/stage/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@33379242{/stages/pool,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@2e32fc22{/stages/pool/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@3f5156a6{/storage,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@72bdd7c7{/storage/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@7d17ee50{/storage/rdd,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@44fdce3c{/storage/rdd/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@712c5463{/environment,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@6d33a66e{/environment/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@2f14b0f6{/executors,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@5b20706{/executors/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@16aed49f{/executors/threadDump,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@66de00f2{/executors/threadDump/json,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@6c479fdf{/static,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@79d82f66{/,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@19b206ee{/api,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@ffd4cba{/jobs/job/kill,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@5f1483fd{/stages/stage/kill,null,AVAILABLE,@Spark}
18/10/07 06:00:54 INFO ServerConnector: Started Spark@21263314{HTTP/1.1}{10.1.237.119:22640}
18/10/07 06:00:54 INFO Server: Started @47955ms
18/10/07 06:06:46 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@5d5574c7{/metrics/json,null,AVAILABLE,@Spark}
18/10/07 06:06:47 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@2328ec73{/SQL,null,AVAILABLE,@Spark}
18/10/07 06:06:47 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@58021c3c{/SQL/json,null,AVAILABLE,@Spark}
18/10/07 06:06:47 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@7bda01da{/SQL/execution,null,AVAILABLE,@Spark}
18/10/07 06:06:47 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@5c997de8{/SQL/execution/json,null,AVAILABLE,@Spark}
18/10/07 06:06:47 INFO ContextHandler: Started o.s.j.s.ServletContextHandler@15d58530{/static/sql,null,AVAILABLE,@Spark}
18/10/07 06:06:48 WARN SessionState: load mapred-default.xml, HIVE_CONF_DIR env not found!
18/10/07 06:06:50 WARN SessionState: load mapred-default.xml, HIVE_CONF_DIR env not found!
从日志中启动服务器大约需要6分钟？
18/10/07 06:00:54 INFO Server: Started @47955ms
18/10/07 06:06:46 INFO ContextHandler: Started
我想问一下这里会发生什么，为什么要花这么长时间？