I tried to get the PhysicalPlan from zookeeper using the following codes:
String stateMgrClass = Context.stateManagerClass(this.config);
IStateManager stateManager = null;
stateManager = ReflectionUtils.newInstance(stateMgrClass);
stateManager.initialize(this.config);
SchedulerStateManagerAdaptor stateManagerAdaptor = new SchedulerStateManagerAdaptor(stateManager, 5000);
PhysicalPlans.PhysicalPlan physicalPlan = stateManagerAdaptor.getPhysicalPlan(this.topologyName);
And then the exceptiion: java.lang.VerifyError: Bad type on operand stack happened:
Exception in thread "Thread-4" java.lang.VerifyError: Bad type on operand stack
Exception Details:
Location:
com/twitter/heron/proto/system/PhysicalPlans$PhysicalPlan$Builder.mergeTopology(Lcom/twitter/heron/api/generated/TopologyAPI$Topology;)Lcom/twitter/heron/proto/system/PhysicalPlans$PhysicalPlan$Builder; @72: invokevirtual
Reason:
Type 'com/twitter/heron/api/generated/TopologyAPI$Topology' (current frame, stack[1]) is not assignable to 'com/google/protobuf/AbstractMessage'
Current Frame:
bci: @72
flags: { }
locals: { 'com/twitter/heron/proto/system/PhysicalPlans$PhysicalPlan$Builder', 'com/twitter/heron/api/generated/TopologyAPI$Topology' }
stack: { 'com/google/protobuf/SingleFieldBuilderV3', 'com/twitter/heron/api/generated/TopologyAPI$Topology' }
Bytecode:
0x0000000: 2ab4 0014 c700 3f2a b400 1604 7e04 a000
0x0000010: 292a b400 09c6 0022 2ab4 0009 b800 4fa5
0x0000020: 0018 2a2a b400 09b8 0055 2bb6 0056 b600
0x0000030: 57b5 0009 a700 082a 2bb5 0009 2ab6 0037
0x0000040: a700 0c2a b400 142b b600 5857 2a59 b400
0x0000050: 1604 80b5 0016 2ab0
Stackmap Table:
same_frame(@55)
same_frame(@60)
same_frame(@67)
same_frame(@76)
at com.twitter.heron.proto.system.PhysicalPlans$PhysicalPlan.toBuilder(PhysicalPlans.java:4211)
at com.twitter.heron.proto.system.PhysicalPlans$PhysicalPlan.newBuilder(PhysicalPlans.java:4204)
at com.twitter.heron.statemgr.FileSystemStateManager.getPhysicalPlan(FileSystemStateManager.java:165)
at com.twitter.heron.spi.statemgr.SchedulerStateManagerAdaptor.getPhysicalPlan(SchedulerStateManagerAdaptor.java:289)
at zyt.custom.my.scheduler.aurora.AuroraSchedulerController.basedWeightSchedule(AuroraSchedulerController.java:782)
at zyt.custom.my.scheduler.aurora.AuroraSchedulerThread.run(AuroraSchedulerThread.java:54)
I don't know what caused this exception. Thanks for your help.
This question has been solved by deleting the heron-api:[heron-version].jar
from the pom.xml file.
The heron-spi:[heron-version].jar
is necessary to create a custom scheduler of Heron.