Tim Armstrong has uploaded a new patch set (#9).

Change subject: IMPALA-4118: extract encryption utils from BufferedBlockMgr

IMPALA-4118: extract encryption utils from BufferedBlockMgr

As groundwork for IMPALA-4118, extract encryption and integrity
verification routines into a separate module that can be used
by the new BufferPool.

Simplify the logic in BufferedBlockMgr by not distinguishing between the
integrity check and encryption options, which are controlled by the same
command line flag anyway.

This patch changes how the OpenSSL RNG is seeded. I consulted with the
original author of the code (Michael Yoder), who suggested that the new
approach would be appropriate: "I'd pick whatever implementation is
easiest for you. You could add entropy once per query, or once every X
keys (100 keys seems reasonable), or once every "convenient place". 4kb
is probably overkill, you could use 512b for example."

Added some unit tests for the utilities. We already have coverage of the
BufferedBlockMgr with encryption in buffered-block-mgr-test. Also reduce
the number of iterations in the buffered-block-mgr-test to save some
testing time.

Change-Id: Ibebe431f69c3c569cbff68171beaa32ef2ab03b6
M be/src/benchmarks/bswap-benchmark.cc
M be/src/bufferpool/buffer-pool-test.cc
M be/src/bufferpool/buffer-pool.cc
M be/src/bufferpool/reservation-tracker-test.cc
M be/src/bufferpool/reservation-tracker.cc
M be/src/codegen/codegen-symbol-emitter.cc
M be/src/common/init.cc
M be/src/common/names.h
M be/src/exec/catalog-op-executor.cc
M be/src/exec/hdfs-parquet-scanner.cc
M be/src/exec/kudu-scan-node-test.cc
M be/src/exec/kudu-scan-node.cc
M be/src/exec/kudu-scanner.cc
M be/src/exec/parquet-column-readers.cc
M be/src/exec/parquet-metadata-utils.cc
M be/src/exprs/bit-byte-functions.cc
M be/src/exprs/operators-ir.cc
M be/src/exprs/timezone_db.cc
M be/src/runtime/buffered-block-mgr-test.cc
M be/src/runtime/buffered-block-mgr.cc
M be/src/runtime/buffered-block-mgr.h
M be/src/runtime/data-stream-sender.cc
M be/src/runtime/hdfs-fs-cache-test.cc
M be/src/scheduling/request-pool-service.cc
M be/src/util/CMakeLists.txt
M be/src/util/cpu-info.cc
M be/src/util/hdr-histogram.cc
A be/src/util/openssl-util-test.cc
A be/src/util/openssl-util.cc
A be/src/util/openssl-util.h
M be/src/util/redactor-config-parser-test.cc
M be/src/util/redactor.cc
32 files changed, 503 insertions(+), 265 deletions(-)

  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/89/4389/9
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ibebe431f69c3c569cbff68171beaa32ef2ab03b6
Gerrit-PatchSet: 9
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Alex Behm <alex.b...@cloudera.com>
Gerrit-Reviewer: Michael Ho <k...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>

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