SPARK-10582: Using dynamic-executor-allocation, if AM failed, the new AM will be started. But the new AM does not allocate executors to driver.

SPARK-11137: Make StreamingContext.stop() exception-safe.

SPARK-11182: HDFS Delegation Token will be expired when calling "UserGroupInformation.getCurrentUser.addCredentials" in HA mode.

SPARK-11314: Add service API and test service for Yarn Cluster schedulers.

SPARK-11627: Spark Streaming backpressure mechanism has no initial rate limit, receivers receive data at the maximum speed, it might cause OOM exception.

SPARK-11969: SQL UI does not work with PySpark.

SPARK-12001: StreamingContext cannot be completely stopped if the stop() is interrupted.

SPARK-12009: Avoid re-allocate yarn container while driver want to stop all executors.

SPARK-12142: Can't request executor when container allocator is not ready.

SPARK-12241: Improve failure reporting in Yarn client obtainTokenForHBase().

SPARK-12353: Wrong output for countByValue and countByValueAndWindow.

SPARK-12513: SocketReceiver hang in Netcat example.

SPARK-12523: Support long-running of the Spark on HBase and hive metastore.

SPARK-12920: Fix high CPU usage in Spark thrift server with concurrent users.

SPARK-12925: Improve HiveInspectors.unwrap for StringObjectInspector.getPrimitiveWritableObject.

SPARK-12948: OrcRelation uses HadoopRDD which can broadcast conf objects frequently.

SPARK-12998: Enable OrcRelation when connecting via Spark thrift server.

SPARK-13021: Fail fast when custom RDD's violate RDD.partition's API contract.

SPARK-13117: WebUI should use the local IP not 0.0.0.0.

SPARK-13308: ManagedBuffers passed to OneToOneStreamManager need to be freed in non error cases.

SPARK-13360: Pyspark related environment variable is not propagated to driver in yarn-cluster mode.

SPARK-13468: Fix a corner case where the page UI should show DAG but it doesn't show.

SPARK-13478: Use real user when fetching delegation tokens.

SPARK-13599: Groovy-all ends up in spark-assembly if Hive profile set.

SPARK-13642: Properly handle signal kill in ApplicationMaster.

SPARK-13885: Fix attempt ID regression for Spark running on Yarn.

SPARK-14062: Fix log4j and upload metrics.properties automatically with distributed cache.

SPARK-6847: Stack overflow on updateStateByKey which followed by a stream with checkpoint set.

SPARK-11315: Add YARN extension service to publish Spark events to YARN timeline service.

SPARK-11323: Add History Service Provider to service application histories from YARN timeline server.

SPARK-12417: Support to have ORC bloom filters during write code path.

SPARK-12898: Consider having dummyCallSite for HiveTableScan.