Simplify Ignite exception

[aurbroszniowski]

When executing a remote task, a typical Ignite exception is too verbose, and looks like this:

ava.util.concurrent.CompletionException: class org.apache.ignite.IgniteException: Remote job threw user exception (override or implement ComputeTask.result(..) method if you would like to have automatic failover for this exception): Failed to execute job due to unexpected runtime exception [jobId=6a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, ses=GridJobSessionImpl [ses=GridTaskSessionImpl [taskName=org.terracotta.angela.client.Tsa$$Lambda$279/2139172958, dep=GridDeployment [ts=1586168305461, depMode=SHARED, clsLdr=sun.misc.Launcher$AppClassLoader@18b4aac2, clsLdrId=1909ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, userVer=0, loc=true, sampleClsName=org.apache.ignite.internal.processors.cache.mvcc.MvccProcessorImpl, pendingUndeploy=false, undeployed=false, usage=2], taskClsName=org.terracotta.angela.client.Tsa$$Lambda$279/2139172958, sesId=5a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, startTime=1586168306345, endTime=9223372036854775807, taskNodeId=e54dd9fe-441d-4a77-bf16-38120f7ca898, clsLdr=sun.misc.Launcher$AppClassLoader@18b4aac2, closed=false, cpSpi=null, failSpi=null, loadSpi=null, usage=1, fullSup=false, internal=false, topPred=null, subjId=e54dd9fe-441d-4a77-bf16-38120f7ca898, mapFut=IgniteFuture [orig=GridFutureAdapter [ignoreInterrupts=false, state=INIT, res=null, hash=2089045485]], execName=null], jobId=6a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898], err=TC server died while waiting on state-change condition]

	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)
	at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1643)
	at java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1632)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Caused by: class org.apache.ignite.IgniteException: Remote job threw user exception (override or implement ComputeTask.result(..) method if you would like to have automatic failover for this exception): Failed to execute job due to unexpected runtime exception [jobId=6a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, ses=GridJobSessionImpl [ses=GridTaskSessionImpl [taskName=org.terracotta.angela.client.Tsa$$Lambda$279/2139172958, dep=GridDeployment [ts=1586168305461, depMode=SHARED, clsLdr=sun.misc.Launcher$AppClassLoader@18b4aac2, clsLdrId=1909ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, userVer=0, loc=true, sampleClsName=org.apache.ignite.internal.processors.cache.mvcc.MvccProcessorImpl, pendingUndeploy=false, undeployed=false, usage=2], taskClsName=org.terracotta.angela.client.Tsa$$Lambda$279/2139172958, sesId=5a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, startTime=1586168306345, endTime=9223372036854775807, taskNodeId=e54dd9fe-441d-4a77-bf16-38120f7ca898, clsLdr=sun.misc.Launcher$AppClassLoader@18b4aac2, closed=false, cpSpi=null, failSpi=null, loadSpi=null, usage=1, fullSup=false, internal=false, topPred=null, subjId=e54dd9fe-441d-4a77-bf16-38120f7ca898, mapFut=IgniteFuture [orig=GridFutureAdapter [ignoreInterrupts=false, state=INIT, res=null, hash=2089045485]], execName=null], jobId=6a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898], err=TC server died while waiting on state-change condition]
	at org.apache.ignite.compute.ComputeTaskAdapter.result(ComputeTaskAdapter.java:102)
	at org.apache.ignite.internal.processors.task.GridTaskWorker$5.apply(GridTaskWorker.java:1062)
	at org.apache.ignite.internal.processors.task.GridTaskWorker$5.apply(GridTaskWorker.java:1055)
	at org.apache.ignite.internal.util.IgniteUtils.wrapThreadLoader(IgniteUtils.java:7037)
	at org.apache.ignite.internal.processors.task.GridTaskWorker.result(GridTaskWorker.java:1055)
	at org.apache.ignite.internal.processors.task.GridTaskWorker.onResponse(GridTaskWorker.java:862)
	at org.apache.ignite.internal.processors.task.GridTaskProcessor.processJobExecuteResponse(GridTaskProcessor.java:1146)
	at org.apache.ignite.internal.processors.job.GridJobWorker.finishJob(GridJobWorker.java:941)
	at org.apache.ignite.internal.processors.job.GridJobWorker.finishJob(GridJobWorker.java:789)
	at org.apache.ignite.internal.processors.job.GridJobWorker.execute0(GridJobWorker.java:639)
	at org.apache.ignite.internal.processors.job.GridJobWorker.body(GridJobWorker.java:499)
	at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: class org.apache.ignite.compute.ComputeUserUndeclaredException: Failed to execute job due to unexpected runtime exception [jobId=6a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, ses=GridJobSessionImpl [ses=GridTaskSessionImpl [taskName=org.terracotta.angela.client.Tsa$$Lambda$279/2139172958, dep=GridDeployment [ts=1586168305461, depMode=SHARED, clsLdr=sun.misc.Launcher$AppClassLoader@18b4aac2, clsLdrId=1909ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, userVer=0, loc=true, sampleClsName=org.apache.ignite.internal.processors.cache.mvcc.MvccProcessorImpl, pendingUndeploy=false, undeployed=false, usage=2], taskClsName=org.terracotta.angela.client.Tsa$$Lambda$279/2139172958, sesId=5a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898, startTime=1586168306345, endTime=9223372036854775807, taskNodeId=e54dd9fe-441d-4a77-bf16-38120f7ca898, clsLdr=sun.misc.Launcher$AppClassLoader@18b4aac2, closed=false, cpSpi=null, failSpi=null, loadSpi=null, usage=1, fullSup=false, internal=false, topPred=null, subjId=e54dd9fe-441d-4a77-bf16-38120f7ca898, mapFut=IgniteFuture [orig=GridFutureAdapter [ignoreInterrupts=false, state=INIT, res=null, hash=2089045485]], execName=null], jobId=6a09ffe4171-e54dd9fe-441d-4a77-bf16-38120f7ca898], err=TC server died while waiting on state-change condition]
	at org.apache.ignite.internal.processors.job.GridJobWorker.handleThrowable(GridJobWorker.java:697)
	at org.apache.ignite.internal.processors.job.GridJobWorker.execute0(GridJobWorker.java:629)
	... 5 more
Caused by: java.lang.RuntimeException: TC server died while waiting on state-change condition
	at org.terracotta.angela.common.TerracottaServerInstance.waitForState(TerracottaServerInstance.java:148)
	at org.terracotta.angela.agent.AgentController.waitForTsaInState(AgentController.java:297)
	at org.terracotta.angela.client.Tsa.lambda$start$7b0bf020$1(Tsa.java:255)
	at org.apache.ignite.internal.processors.closure.GridClosureProcessor$C4.execute(GridClosureProcessor.java:1944)
	at org.apache.ignite.internal.processors.job.GridJobWorker$2.call(GridJobWorker.java:576)
	at org.apache.ignite.internal.util.IgniteUtils.wrapThreadLoader(IgniteUtils.java:7005)
	at org.apache.ignite.internal.processors.job.GridJobWorker.execute0(GridJobWorker.java:570)
	... 5 more

Is it possible to simplify. it and only keep the root cause (last block of the stack trace) :

Caused by: java.lang.RuntimeException: TC server died while waiting on state-change condition
	at org.terracotta.angela.common.TerracottaServerInstance.waitForState(TerracottaServerInstance.java:148)
	at org.terracotta.angela.agent.AgentController.waitForTsaInState(AgentController.java:297)
	at org.terracotta.angela.client.Tsa.lambda$start$7b0bf020$1(Tsa.java:255)
	at org.apache.ignite.internal.processors.closure.GridClosureProcessor$C4.execute(GridClosureProcessor.java:1944)
	at org.apache.ignite.internal.processors.job.GridJobWorker$2.call(GridJobWorker.java:576)
	at org.apache.ignite.internal.util.IgniteUtils.wrapThreadLoader(IgniteUtils.java:7005)
	at org.apache.ignite.internal.processors.job.GridJobWorker.execute0(GridJobWorker.java:570)
	... 5 more