[
https://issues.apache.org/jira/browse/IMPALA-7984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16971202#comment-16971202
]
ASF subversion and git services commented on IMPALA-7984:
---------------------------------------------------------
Commit ec11c18884988e838a8838e1e8ecc37461e1a138 in impala's branch
refs/heads/master from Fang-Yu Rao
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=ec11c18 ]
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: I6b394796d250286510e157ae326882bfc01d387a
Reviewed-on: http://gerrit.cloudera.org:8080/13882
Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
> Port UpdateFilter() and PublishFilter() to KRPC
> -----------------------------------------------
>
> Key: IMPALA-7984
> URL: https://issues.apache.org/jira/browse/IMPALA-7984
> Project: IMPALA
> Issue Type: Task
> Components: Distributed Exec
> Affects Versions: Impala 3.1.0
> Reporter: Michael Ho
> Assignee: Fang-Yu Rao
> Priority: Major
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org
For additional commands, e-mail: issues-all-h...@impala.apache.org
