Exception parsing Spark event log

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Two recent compiles, one using sbt.version 0.13.9 and the other using 0.13.2 in build.properties.
Compiled on centos7 with activator 1.3.12
Cluster is ambari hdp stack 2.6.1
Both have the below values in compile.conf
hadoop_version=2.6.1
spark_version=2.1.1
play_opts="-Dsbt.repository.config=app-conf/resolver.conf"

These are two separate compilations on two separate boxes that are members of the same Ambari cluster structure (hdp stack 2.6.1) and both hosts fire the error below. Note that I am only executing included spark test jobs (word count of war-and-peace and sparkpi)

`[error] o.a.s.s.ReplayListenerBus - Exception parsing Spark event log: application_1502904041499_0358
org.json4s.package$MappingException: Did not find value which can be converted into boolean
at org.json4s.reflect.package$.fail(package.scala:96) ~[org.json4s.json4s-core_2.10-3.2.10.jar:3.2.10]
at org.json4s.Extraction$.convert(Extraction.scala:554) ~[org.json4s.json4s-core_2.10-3.2.10.jar:3.2.10]
at org.json4s.Extraction$.extract(Extraction.scala:331) ~[org.json4s.json4s-core_2.10-3.2.10.jar:3.2.10]
at org.json4s.Extraction$.extract(Extraction.scala:42) ~[org.json4s.json4s-core_2.10-3.2.10.jar:3.2.10]
at org.json4s.ExtractableJsonAstNode.extract(ExtractableJsonAstNode.scala:21) ~[org.json4s.json4s-core_2.10-3.2.10.jar:3.2.10]
at org.apache.spark.util.JsonProtocol$.storageLevelFromJson(JsonProtocol.scala:826) ~[org.apache.spark.spark-core_2.10-1.4.0.jar:1.4.0]
[error] o.a.s.s.ReplayListenerBus - Malformed line #21: {"Event":"SparkListenerJobStart","Job ID":0,"Submission Time":1503944198210,"Stage Infos":[{"Stage ID":0,"Stage Attempt ID":0,"Stage Name":"reduce at SparkPi.scala:38","Number of Tasks":100000,"RDD Info":[{"RDD ID":1,"Name":"MapPartitionsRDD","Scope":"{\"id\":\"1\",\"name\":\"map\"}","Callsite":"map at SparkPi.scala:34","Parent IDs":[0],"Storage Level":{"Use Disk":false,"Use Memory":false,"Deserialized":false,"Replication":1},"Number of Partitions":100000,"Number of Cached Partitions":0,"Memory Size":0,"Disk Size":0},{"RDD ID":0,"Name":"ParallelCollectionRDD","Scope":"{\"id\":\"0\",\"name\":\"parallelize\"}","Callsite":"parallelize at SparkPi.scala:34","Parent IDs":[],"Storage Level":{"Use Disk":false,"Use Memory":false,"Deserialized":false,"Replication":1},"Number of Partitions":100000,"Number of Cached Partitions":0,"Memory Size":0,"Disk Size":0}],"Parent IDs":[],"Details":"org.apache.spark.rdd.RDD.reduce(RDD.scala:1008)\norg.apache.spark.examples.SparkPi$.main(SparkPi.scala:38)\norg.apache.spark.examples.SparkPi.main(SparkPi.scala)\nsun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\nsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\nsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\njava.lang.reflect.Method.invoke(Method.java:498)\norg.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:750)\norg.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:187)\norg.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:212)\norg.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:126)\norg.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)","Accumulables":[]}],"Stage IDs":[0],"Properties":{"spark.rdd.scope.noOverride":"true","spark.rdd.scope":"{\"id\":\"2\",\"name\":\"reduce\"}"}}
`

The report points to Spark's ReplayListenerBus and JsonProtocol.storageLevelFromJson, and includes the malformed SparkListenerJobStart line; no Dr. Elephant source file or test is named. Start by tracing how Spark event logs are replayed, then reproduce with the included SparkPi or word-count jobs; done means the reported event log parses without the boolean conversion error.

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