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ASF subversion and git services commented on KUDU-1938: ------------------------------------------------------- Commit e45f893981a36d721752f1e0c743cdf18a6f5428 in kudu's branch refs/heads/master from Attila Bukor [ https://gitbox.apache.org/repos/asf?p=kudu.git;h=e45f893 ] KUDU-1938 Make UTF-8 truncation faster pt 2 Adds Intel Intrinsics (up to SSE4.2) to speed up the processing of UTF8 character counting in the case of ASCII-only chunks (fast path) by doubling the chunk size in a single pass from 64 to 128 bits. Before: [ RUN ] CharUtilTest.StressTestUtf8 [ OK ] CharUtilTest.StressTestUtf8 (7746 ms) [ RUN ] CharUtilTest.StressTestAscii [ OK ] CharUtilTest.StressTestAscii (1028 ms) After: [ RUN ] CharUtilTest.StressTestUtf8 [ OK ] CharUtilTest.StressTestUtf8 (9285 ms) [ RUN ] CharUtilTest.StressTestAscii [ OK ] CharUtilTest.StressTestAscii (708 ms) Change-Id: I9a491157dd5c8b4815030bbda921a0afc0bafd28 Reviewed-on: http://gerrit.cloudera.org:8080/14354 Reviewed-by: Adar Dembo <a...@cloudera.com> Tested-by: Kudu Jenkins > Support for VARCHAR type > ------------------------ > > Key: KUDU-1938 > URL: https://issues.apache.org/jira/browse/KUDU-1938 > Project: Kudu > Issue Type: New Feature > Components: client, tablet > Reporter: Farzana Kader > Assignee: Attila Bukor > Priority: Major > Labels: limitations, roadmap-candidate > > VARCHAR is currently not supported by Kudu. This is functionality that > currently exists in Impala. Some client applications convert STRING to 32K > bytes which causes performance issues so they need the VARCHAR support in > order to integrate well with Kudu. -- This message was sent by Atlassian Jira (v8.3.4#803005)