[Impala-ASF-CR] IMPALA-6656: BufferAllocator observability

["Tim Armstrong (Code Review)" <ge...@cloudera.org>]

Tim Armstrong has uploaded a new patch set (#2). ( http://gerrit.cloudera.org:8080/11947 )

Change subject: IMPALA-6656: BufferAllocator observability
......................................................................

IMPALA-6656: BufferAllocator observability

Adds a set of metrics per allocator arena in the buffer pool that help
understand how buffers are being allocated and how much time is spent in
the system allocator (i.e. TCMalloc). These are low level metrics that
require some interpretation but provide visibility into behaviour that
was previously totally opaque.

Also tracks the total time spent in the system allocator in the query
profile, to provide clues if time spent in TCMalloc is a perf issue for
a particular query (e.g. if it's hitting a lot of lock contention).

Backend tests required tweaks to avoid double-registration of the new
metrics.

Also switch default sort in /metrics to be by name, so that it's easier
to locate metrics.

Change-Id: I12b740b8ea7773b3215681531dfa62db55cfdf18
---
M be/src/runtime/bufferpool/buffer-allocator-test.cc
M be/src/runtime/bufferpool/buffer-allocator.cc
M be/src/runtime/bufferpool/buffer-allocator.h
M be/src/runtime/bufferpool/buffer-pool-counters.h
M be/src/runtime/bufferpool/buffer-pool-test.cc
M be/src/runtime/bufferpool/buffer-pool.cc
M be/src/runtime/bufferpool/buffer-pool.h
M be/src/runtime/bufferpool/suballocator-test.cc
M be/src/runtime/exec-env.cc
M be/src/runtime/test-env.cc
M be/src/runtime/test-env.h
M be/src/util/metrics.h
M common/thrift/metrics.json
M www/metric_group.tmpl
14 files changed, 272 insertions(+), 72 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/47/11947/2
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I12b740b8ea7773b3215681531dfa62db55cfdf18
Gerrit-Change-Number: 11947
Gerrit-PatchSet: 2
Gerrit-Owner: Tim Armstrong <ta...@cloudera.com>