[
https://issues.apache.org/jira/browse/DRILL-5902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16365278#comment-16365278
]
ASF GitHub Bot commented on DRILL-5902:
---------------------------------------
Github user arina-ielchiieva commented on a diff in the pull request:
https://github.com/apache/drill/pull/1113#discussion_r168415470
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/work/foreman/QueryStateProcessor.java
---
@@ -125,20 +125,17 @@ public void cancel() {
case PREPARING:
case PLANNING:
case ENQUEUED:
- moveToState(QueryState.CANCELLATION_REQUESTED, null);
- return;
-
case STARTING:
case RUNNING:
- addToEventQueue(QueryState.CANCELLATION_REQUESTED, null);
- return;
+ moveToState(QueryState.CANCELLATION_REQUESTED, null);
--- End diff --
1. Could you please explain why `addToEventQueue` was changed to
`moveToState`. Per my understanding `addToEventQueue` is used to ensure that
cancellation will be requested only when all fragments are sent out to avoid
hanging in cancellation requested state. For preparing, planning and enqueued
states we cancel immediately since these states are done locally.
2. Why this Jira title states it's a regression? Do we know what has caused
the regression?
> Regression: Queries encounter random failure due to RPC connection timed out
> ----------------------------------------------------------------------------
>
> Key: DRILL-5902
> URL: https://issues.apache.org/jira/browse/DRILL-5902
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - RPC
> Affects Versions: 1.11.0
> Reporter: Robert Hou
> Assignee: Vlad Rozov
> Priority: Critical
> Attachments: 261230f7-e3b9-0cee-22d8-921cb56e3e12.sys.drill,
> node196.drillbit.log
>
>
> Multiple random failures (25) occurred with the latest
> Functional-Baseline-88.193 run. Here is a sample query:
> {noformat}
> /root/drillAutomation/prasadns14/framework/resources/Functional/window_functions/multiple_partitions/q27.sql
> -- Kitchen sink
> -- Use all supported functions
> select
> rank() over W,
> dense_rank() over W,
> percent_rank() over W,
> cume_dist() over W,
> avg(c_integer + c_integer) over W,
> sum(c_integer/100) over W,
> count(*) over W,
> min(c_integer) over W,
> max(c_integer) over W,
> row_number() over W
> from
> j7
> where
> c_boolean is not null
> window W as (partition by c_bigint, c_date, c_time, c_boolean order by
> c_integer)
> {noformat}
> From the logs:
> {noformat}
> 2017-10-23 04:14:36,536 [BitServer-7] WARN o.a.d.e.w.b.ControlMessageHandler
> - Dropping request for early fragment termination for path
> 261230e8-d03e-9ca9-91bf-c1039deecde2:1:1 ->
> 261230e8-d03e-9ca9-91bf-c1039deecde2:0:0 as path to executor unavailable.
> 2017-10-23 04:14:36,537 [BitServer-7] WARN o.a.d.e.w.b.ControlMessageHandler
> - Dropping request for early fragment termination for path
> 261230e8-d03e-9ca9-91bf-c1039deecde2:1:5 ->
> 261230e8-d03e-9ca9-91bf-c1039deecde2:0:0 as path to executor unavailable.
> 2017-10-23 04:14:36,537 [BitServer-7] WARN o.a.d.e.w.b.ControlMessageHandler
> - Dropping request for early fragment termination for path
> 261230e8-d03e-9ca9-91bf-c1039deecde2:1:9 ->
> 261230e8-d03e-9ca9-91bf-c1039deecde2:0:0 as path to executor unavailable.
> 2017-10-23 04:14:36,537 [BitServer-7] WARN o.a.d.e.w.b.ControlMessageHandler
> - Dropping request for early fragment termination for path
> 261230e8-d03e-9ca9-91bf-c1039deecde2:1:13 ->
> 261230e8-d03e-9ca9-91bf-c1039deecde2:0:0 as path to executor unavailable.
> 2017-10-23 04:14:36,537 [BitServer-7] WARN o.a.d.e.w.b.ControlMessageHandler
> - Dropping request for early fragment termination for path
> 261230e8-d03e-9ca9-91bf-c1039deecde2:1:17 ->
> 261230e8-d03e-9ca9-91bf-c1039deecde2:0:0 as path to executor unavailable.
> 2017-10-23 04:14:36,538 [BitServer-7] WARN o.a.d.e.w.b.ControlMessageHandler
> - Dropping request for early fragment termination for path
> 261230e8-d03e-9ca9-91bf-c1039deecde2:1:21 ->
> 261230e8-d03e-9ca9-91bf-c1039deecde2:0:0 as path to executor unavailable.
> 2017-10-23 04:14:36,538 [BitServer-7] WARN o.a.d.e.w.b.ControlMessageHandler
> - Dropping request for early fragment termination for path
> 261230e8-d03e-9ca9-91bf-c1039deecde2:1:25 ->
> 261230e8-d03e-9ca9-91bf-c1039deecde2:0:0 as path to executor unavailable.
> {noformat}
> {noformat}
> 2017-10-23 04:14:53,941 [UserServer-1] INFO
> o.a.drill.exec.rpc.user.UserServer - RPC connection /10.10.88.196:31010 <-->
> /10.10.88.193:38281 (user server) timed out. Timeout was set to 30 seconds.
> Closing connection.
> 2017-10-23 04:14:53,952 [UserServer-1] INFO
> o.a.d.e.w.fragment.FragmentExecutor -
> 261230f8-2698-15b2-952f-d4ade8d6b180:0:0: State change requested RUNNING -->
> FAILED
> 2017-10-23 04:14:53,952 [261230f8-2698-15b2-952f-d4ade8d6b180:frag:0:0] INFO
> o.a.d.e.w.fragment.FragmentExecutor -
> 261230f8-2698-15b2-952f-d4ade8d6b180:0:0: State change requested FAILED -->
> FINISHED
> 2017-10-23 04:14:53,956 [UserServer-1] WARN
> o.apache.drill.exec.rpc.RequestIdMap - Failure while attempting to fail rpc
> response.
> java.lang.IllegalArgumentException: Self-suppression not permitted
> at java.lang.Throwable.addSuppressed(Throwable.java:1043)
> ~[na:1.7.0_45]
> at
> org.apache.drill.common.DeferredException.addException(DeferredException.java:88)
> ~[drill-common-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.common.DeferredException.addThrowable(DeferredException.java:97)
> ~[drill-common-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.fail(FragmentExecutor.java:413)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.access$700(FragmentExecutor.java:55)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$ExecutorStateImpl.fail(FragmentExecutor.java:427)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.ops.FragmentContext.fail(FragmentContext.java:213)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.ops.FragmentContext$1.accept(FragmentContext.java:95)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.ops.FragmentContext$1.accept(FragmentContext.java:92)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.ops.StatusHandler.failed(StatusHandler.java:42)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.RequestIdMap$RpcListener.setException(RequestIdMap.java:139)
> ~[drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.RequestIdMap$SetExceptionProcedure.apply(RequestIdMap.java:76)
> [drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.RequestIdMap$SetExceptionProcedure.apply(RequestIdMap.java:66)
> [drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> com.carrotsearch.hppc.IntObjectHashMap.forEach(IntObjectHashMap.java:692)
> [hppc-0.7.1.jar:na]
> at
> org.apache.drill.exec.rpc.RequestIdMap.channelClosed(RequestIdMap.java:62)
> [drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.AbstractRemoteConnection.channelClosed(AbstractRemoteConnection.java:192)
> [drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.AbstractServerConnection.channelClosed(AbstractServerConnection.java:165)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.RpcBus$ChannelClosedHandler.operationComplete(RpcBus.java:167)
> [drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.RpcBus$ChannelClosedHandler.operationComplete(RpcBus.java:144)
> [drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:507)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:500)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:479)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannel$CloseFuture.setClosed(AbstractChannel.java:1003)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.doClose0(AbstractChannel.java:632)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:610)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:553)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.close(DefaultChannelPipeline.java:1236)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:618)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:602)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.ChannelOutboundHandlerAdapter.close(ChannelOutboundHandlerAdapter.java:71)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:618)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:602)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:459)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.handler.timeout.ReadTimeoutHandler.readTimedOut(ReadTimeoutHandler.java:99)
> [netty-handler-4.0.48.Final.jar:4.0.48.Final]
> at
> org.apache.drill.exec.rpc.BasicServer$LoggingReadTimeoutHandler.readTimedOut(BasicServer.java:147)
> [drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> io.netty.handler.timeout.ReadTimeoutHandler.channelIdle(ReadTimeoutHandler.java:90)
> [netty-handler-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.handler.timeout.IdleStateHandler$ReaderIdleTimeoutTask.run(IdleStateHandler.java:494)
> [netty-handler-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.handler.timeout.IdleStateHandler$AbstractIdleTask.run(IdleStateHandler.java:466)
> [netty-handler-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:120)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:399)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
> [netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
> [netty-common-4.0.48.Final.jar:4.0.48.Final]
> at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
> Caused by: org.apache.drill.exec.rpc.ChannelClosedException: Channel closed
> /10.10.88.196:31010 <--> /10.10.88.193:38343.
> at
> org.apache.drill.exec.rpc.RpcBus$ChannelClosedHandler.operationComplete(RpcBus.java:164)
> [drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> ... 29 common frames omitted
> 2017-10-23 04:14:53,963 [UserServer-1] INFO
> o.a.drill.exec.rpc.user.UserSession - Deleted session temporary location
> [/tmp/bec73426-40b7-44b6-8819-7958634614e9] from file system [maprfs:///]
> 2017-10-23 04:14:53,966 [261230f8-2698-15b2-952f-d4ade8d6b180:frag:0:0] ERROR
> o.a.d.e.w.fragment.FragmentExecutor - SYSTEM ERROR: ChannelClosedException:
> Channel closed /10.10.88.196:31010 <--> /10.10.88.193:38343.
> Fragment 0:0
> [Error Id: d3c59456-284f-4c35-988f-f052b7f6c4b0 on atsqa4-196.qa.lab:31010]
> org.apache.drill.common.exceptions.UserException: SYSTEM ERROR:
> ChannelClosedException: Channel closed /10.10.88.196:31010 <-->
> /10.10.88.193:38343.
> Fragment 0:0
> [Error Id: d3c59456-284f-4c35-988f-f052b7f6c4b0 on atsqa4-196.qa.lab:31010]
> at
> org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:586)
> ~[drill-common-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.sendFinalState(FragmentExecutor.java:298)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:160)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:267)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
> [drill-common-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> [na:1.7.0_45]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> [na:1.7.0_45]
> at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
> Caused by: org.apache.drill.exec.rpc.ChannelClosedException: Channel closed
> /10.10.88.196:31010 <--> /10.10.88.193:38343.
> at
> org.apache.drill.exec.rpc.RpcBus$ChannelClosedHandler.operationComplete(RpcBus.java:164)
> ~[drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.RpcBus$ChannelClosedHandler.operationComplete(RpcBus.java:144)
> ~[drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:507)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:500)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:479)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannel$CloseFuture.setClosed(AbstractChannel.java:1003)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.doClose0(AbstractChannel.java:632)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:610)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:553)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.close(DefaultChannelPipeline.java:1236)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:618)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:602)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.ChannelOutboundHandlerAdapter.close(ChannelOutboundHandlerAdapter.java:71)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:618)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:602)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:459)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.handler.timeout.ReadTimeoutHandler.readTimedOut(ReadTimeoutHandler.java:99)
> ~[netty-handler-4.0.48.Final.jar:4.0.48.Final]
> at
> org.apache.drill.exec.rpc.BasicServer$LoggingReadTimeoutHandler.readTimedOut(BasicServer.java:147)
> ~[drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> io.netty.handler.timeout.ReadTimeoutHandler.channelIdle(ReadTimeoutHandler.java:90)
> ~[netty-handler-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.handler.timeout.IdleStateHandler$ReaderIdleTimeoutTask.run(IdleStateHandler.java:494)
> ~[netty-handler-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.handler.timeout.IdleStateHandler$AbstractIdleTask.run(IdleStateHandler.java:466)
> ~[netty-handler-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:120)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:399)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
> ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
> ... 1 common frames omitted
> 2017-10-23 04:14:54,089 [UserServer-1] INFO
> o.a.drill.exec.work.foreman.Foreman - Failure while trying communicate query
> result to initiating client. This would happen if a client is disconnected
> before response notice can be sent.
> org.apache.drill.exec.rpc.RpcException: Failure sending message.
> {noformat}
> sys.version is:
> 1.12.0-SNAPSHOT f1d1945b3772bb782039fd6811e34a7de66441c8
> DRILL-5582: C++ Client: [Threat Modeling] Drillbit may be spoofed by an
> attacker and this may lead to data being written to the attacker's target
> instead of Drillbit 19.10.2017 @ 17:13:05 PDT Unknown 19.10.2017 @
> 18:37:13 PDT
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