Hello Mike Percy, Dan Burkert, Kudu Jenkins, Adar Dembo,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/11571
to look at the new patch set (#2).
Change subject: KUDU-2563: [spark] Use the scanner keepAlive API
......................................................................
KUDU-2563: [spark] Use the scanner keepAlive API
Adds scheduled keepAlive calls to the scanner in the
KuduRDD RowIterator. The period in which the calls
are made is configurable via keepAlivePeriodMs and
has a default of 15 seconds (which is 1/4 the default
scanner ttl).
This implementation is similar to the Impala integration.
It checks if a call to the keepAlive API is needed as
it processes each row. Compared to a background
thread, this has the downside of being less consistently
scheduled and susceptible to scenarios in which a single
row takes longer to process than the ttl. However,
because the scanner is not thread safe, this is the most
straightforward solution and has been proven to work.
Change-Id: Ia7f26d6ab8deb24982055d247938a11e188c35db
---
M java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduScanner.java
M java/kudu-client/src/main/java/org/apache/kudu/client/KuduScanner.java
M java/kudu-spark/src/main/scala/org/apache/kudu/spark/kudu/DefaultSource.scala
M java/kudu-spark/src/main/scala/org/apache/kudu/spark/kudu/KuduRDD.scala
M
java/kudu-spark/src/main/scala/org/apache/kudu/spark/kudu/KuduReadOptions.scala
M java/kudu-spark/src/test/scala/org/apache/kudu/spark/kudu/KuduRDDTest.scala
6 files changed, 152 insertions(+), 11 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/71/11571/2
--
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ia7f26d6ab8deb24982055d247938a11e188c35db
Gerrit-Change-Number: 11571
Gerrit-PatchSet: 2
Gerrit-Owner: Grant Henke <granthe...@apache.org>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: Dan Burkert <danburk...@apache.org>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <mpe...@apache.org>
