Exceeding mem limit may result in "Cancelled" failure

 grep '554f6c3731c1d173:d20b4d8b807fff9a' /var/log/impalad/impalad.INFO 
I0821 17:15:19.122673  5618 coordinator.cc:309] Exec() query_id=554f6c3731c1d173:d20b4d8b807fff9a
I0821 17:15:19.212877  5618 plan-fragment-executor.cc:82] Prepare(): query_id=554f6c3731c1d173:d20b4d8b807fff9a instance_id=554f6c3731c1d173:d20b4d8b807fff9b
I0821 17:15:19.379251  5618 coordinator.cc:385] starting 18 backends for query 554f6c3731c1d173:d20b4d8b807fff9a
I0821 17:15:19.871928 22621 plan-fragment-executor.cc:82] Prepare(): query_id=554f6c3731c1d173:d20b4d8b807fff9a instance_id=554f6c3731c1d173:d20b4d8b807fff9d
I0821 17:15:30.211174 17447 plan-fragment-executor.cc:82] Prepare(): query_id=554f6c3731c1d173:d20b4d8b807fff9a instance_id=554f6c3731c1d173:d20b4d8b807fffa1
I0821 17:15:30.846810 22553 plan-fragment-executor.cc:82] Prepare(): query_id=554f6c3731c1d173:d20b4d8b807fff9a instance_id=554f6c3731c1d173:d20b4d8b807fffa3
I0821 17:15:41.101415 10432 plan-fragment-executor.cc:82] Prepare(): query_id=554f6c3731c1d173:d20b4d8b807fff9a instance_id=554f6c3731c1d173:d20b4d8b807fffa7
I0821 17:15:46.802021  5487 buffered-block-mgr.cc:769] Query: 554f6c3731c1d173:d20b4d8b807fff9a write complete callback with error.
I0821 17:15:46.802042  5487 runtime-state.cc:230] Error from query 554f6c3731c1d173:d20b4d8b807fff9a: Memory limit exceeded
I0821 17:15:47.026504  8744 runtime-state.cc:230] Error from query 554f6c3731c1d173:d20b4d8b807fff9a: Memory Limit Exceeded
Query(554f6c3731c1d173:d20b4d8b807fff9a) Limit: Consumption=296.41 MB
I0821 17:15:49.310215  8502 runtime-state.cc:230] Error from query 554f6c3731c1d173:d20b4d8b807fff9a: Memory Limit Exceeded
I0821 17:15:52.537783  5618 coordinator.cc:1116] Cancel() query_id=554f6c3731c1d173:d20b4d8b807fff9a
I0821 17:15:52.549916 22570 coordinator.cc:1301] Backend 4 completed, 17 remaining: query_id=554f6c3731c1d173:d20b4d8b807fff9a
I0821 17:15:52.549937 22570 coordinator.cc:1310] query_id=554f6c3731c1d173:d20b4d8b807fff9a: first in-progress backend: impala-stress-4.vpc.cloudera.com:22000
Query(554f6c3731c1d173:d20b4d8b807fff9a) Limit: Consumption=296.41 MB
I0821 17:15:52.557632  5618 impala-server.cc:813] UnregisterQuery(): query_id=554f6c3731c1d173:d20b4d8b807fff9a
I0821 17:15:52.557718  5618 impala-server.cc:882] Cancel(): query_id=554f6c3731c1d173:d20b4d8b807fff9a
I0821 17:15:52.565330 17443 impala-server.cc:985] ReportExecStatus(): Received report for unknown query ID (probably closed or cancelled). (query_id: 554f6c3731c1d173:d20b4d8b807fff9a, backend: 7, instance: 554f6c3731c1d173:d20b4d8b807fffa3 done: true)
I0821 17:15:52.947180 22548 impala-server.cc:985] ReportExecStatus(): Received report for unknown query ID (probably closed or cancelled). (query_id: 554f6c3731c1d173:d20b4d8b807fff9a, backend: 13, instance: 554f6c3731c1d173:d20b4d8b807fffa9 done: true)
I0821 17:15:52.947417 24348 impala-server.cc:985] ReportExecStatus(): Received report for unknown query ID (probably closed or cancelled). (query_id: 554f6c3731c1d173:d20b4d8b807fff9a, backend: 2, instance: 554f6c3731c1d173:d20b4d8b807fff9e done: true)
I0821 17:15:53.522819  5866 impala-server.cc:985] ReportExecStatus(): Received report for unknown query ID (probably closed or cancelled). (query_id: 554f6c3731c1d173:d20b4d8b807fff9a, backend: 10, instance: 554f6c3731c1d173:d20b4d8b807fffa6 done: true)
I0821 17:16:00.691387  6208 impala-server.cc:985] ReportExecStatus(): Received report for unknown query ID (probably closed or cancelled). (query_id: 554f6c3731c1d173:d20b4d8b807fff9a, backend: 12, instance: 554f6c3731c1d173:d20b4d8b807fffa8 done: false)
I0821 17:16:01.623899  5907 impala-server.cc:985] ReportExecStatus(): Received report for unknown query ID (probably closed or cancelled). (query_id: 554f6c3731c1d173:d20b4d8b807fff9a, backend: 12, instance: 554f6c3731c1d173:d20b4d8b807fffa8 done: true)

Query (id=554f6c3731c1d173:d20b4d8b807fff9a):
  Summary:
    Session ID: a146dd618550b188:8b1ba469daa09789
    Session Type: HIVESERVER2
    HiveServer2 Protocol Version: V6
    Start Time: 2015-08-21 17:15:18.180530000
    End Time: 2015-08-21 17:15:52.558928000
    Query Type: QUERY
    Query State: EXCEPTION
    Query Status: 
Cancelled

    Impala Version: impalad version 2.2.0-cdh5 DEBUG (build 2ffd73a4255cefd521362ffe1cfb37463f67f75c)
....