Todd Lipcon has submitted this change and it was merged. ( http://gerrit.cloudera.org:8080/13425 )
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 Reviewed-on: http://gerrit.cloudera.org:8080/13425 Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Reviewed-by: Michael Ho <k...@cloudera.com> --- 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, 297 insertions(+), 4 deletions(-) Approvals: Impala Public Jenkins: Verified Michael Ho: Looks good to me, approved -- To view, visit http://gerrit.cloudera.org:8080/13425 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: I2302c19abb5db19f1d3d1cd727a82977a9e2ba9c Gerrit-Change-Number: 13425 Gerrit-PatchSet: 9 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> Gerrit-Reviewer: Todd Lipcon <t...@apache.org>
