Hello Michael Ho, Lars Volker, Impala Public Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/13425
to look at the new patch set (#2).
Change subject: IMPALA-8542. Add an access trace for the data cache
......................................................................
IMPALA-8542. Add an access trace for the data cache
This adds a relatively simple JSON-formatted access trace for the data
cache feature. Each partition stores a trace file named 'trace.txt',
with each line representing a hit, miss, or store into the cache.
The trace is collected using the kudu::AsyncLogger class which handles
buffering and deferring the actual IO to a background thread.
By default, the full cache key info is written to the trace (including
the file paths), but a flag can enable anonymization (128-bit
city-hashing) of the file names in case any user would like to capture a
trace to be shared publically without divulging their table names.
Change-Id: I2302c19abb5db19f1d3d1cd727a82977a9e2ba9c
---
M be/src/runtime/io/data-cache-test.cc
M be/src/runtime/io/data-cache.cc
M be/src/runtime/io/data-cache.h
3 files changed, 277 insertions(+), 4 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/25/13425/2
--
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I2302c19abb5db19f1d3d1cd727a82977a9e2ba9c
Gerrit-Change-Number: 13425
Gerrit-PatchSet: 2
Gerrit-Owner: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Lars Volker <l...@cloudera.com>
Gerrit-Reviewer: Michael Ho <k...@cloudera.com>
