commit 702e6c4fa8b7a71ea7f8444245466fd117bf98b1
author Fang-Yu Rao <fangyu.rao@cloudera.com> Sat Jun 08 09:06:57 2019 -0700
committer Tim Armstrong <tarmstrong@cloudera.com> Tue Jan 21 00:49:05 2020 +0000
tree 45c091ba495b9c0c2ced47ece1fcd2e446b04c77
parent 195bd7635f326061e999fe2a5e4a20ce6a4a9874

IMPALA-7984: Port runtime filter from Thrift RPC to KRPC

Previously the aggregation and propagation of a runtime filter in Impala is
implemented using Thrift RPC, which suffers from a disadvantage that the number
of connections in a cluster grows with both the number of queries and cluster
size. This patch ports the functions that implement the aggregation and
propagation of a runtime filter, i.e., UpdateFilter() and PublishFilter(),
respctively, to KRPC, which requires only one connection per direction between
every pair of hosts, thus reducing the number of connections in a cluster.

In addition, this patch also incorporates KRPC sidecar when the runtime filter
is a Bloom filter. KRPC sidecar eliminates the need for an extra copy of the
Bloom filter contents when a Bloom filter is serialized to be transmitted and
hence reduces the serialization overhead. Due to the incorporation of KRPC
sidecar, a SpinLock is also added to prevent a BloomFilter from being
deallocated before its associated KRPC call finishes.

Two related BE tests bloom-filter-test.cc and bloom-filter-benchmark.cc are
also modified accordingly because of the changes to the signatures of some
functions in BloomFilter.

Testing:
This patch has passed the exhaustive tests.

Change-Id: I11a2f92a91750c2470fba082c30f97529524b9c8
Reviewed-on: http://gerrit.cloudera.org:8080/13882
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Reviewed-on: http://gerrit.cloudera.org:8080/14974
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>
Tested-by: Tim Armstrong <tarmstrong@cloudera.com>