[Impala-CR](cdh5-trunk) PREVIEW: Use mmap instead of malloc for buffer pool

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

Tim Armstrong has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/3046

Change subject: PREVIEW: Use mmap instead of malloc for buffer pool
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PREVIEW: Use mmap instead of malloc for buffer pool

Allocate with mmap instead of TCMalloc to give more control over memory
usage. Also allocate huge pages when possible to reduce TLB pressure.

We also need some additional memory metrics, since we previously relied
on the assumption that all memory was allocated through TCMalloc.

Change-Id: Ifbc748f74adcbbdcfa45f3ec7df98284925acbd6
---
M be/src/bufferpool/CMakeLists.txt
A be/src/bufferpool/buffer-allocator-test.cc
M be/src/bufferpool/buffer-allocator.cc
M be/src/bufferpool/buffer-allocator.h
M be/src/bufferpool/buffer-pool.h
M be/src/catalog/catalogd-main.cc
M be/src/runtime/exec-env.cc
M be/src/statestore/statestored-main.cc
M be/src/util/memory-metrics.cc
M be/src/util/memory-metrics.h
M be/src/util/metrics-test.cc
M be/src/util/metrics.h
M common/thrift/generate_error_codes.py
M common/thrift/metrics.json
14 files changed, 335 insertions(+), 14 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/46/3046/1
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Ifbc748f74adcbbdcfa45f3ec7df98284925acbd6
Gerrit-PatchSet: 1
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Tim Armstrong <ta...@cloudera.com>