Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 2B175200C63 for ; Fri, 12 May 2017 00:03:59 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 29BF7160BCA; Thu, 11 May 2017 22:03:59 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 71C04160BC7 for ; Fri, 12 May 2017 00:03:58 +0200 (CEST) Received: (qmail 55526 invoked by uid 500); 11 May 2017 22:03:57 -0000 Mailing-List: contact reviews-help@impala.incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list reviews@impala.incubator.apache.org Received: (qmail 55514 invoked by uid 99); 11 May 2017 22:03:57 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 11 May 2017 22:03:57 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id 8A4B3188A31 for ; Thu, 11 May 2017 22:03:56 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 0.362 X-Spam-Level: X-Spam-Status: No, score=0.362 tagged_above=-999 required=6.31 tests=[RDNS_DYNAMIC=0.363, SPF_PASS=-0.001] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id u50LMrMIeFJt for ; Thu, 11 May 2017 22:03:55 +0000 (UTC) Received: from ip-10-146-233-104.ec2.internal (ec2-75-101-130-251.compute-1.amazonaws.com [75.101.130.251]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTPS id A01C160DDE for ; Thu, 11 May 2017 22:03:55 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by ip-10-146-233-104.ec2.internal (8.14.4/8.14.4) with ESMTP id v4BM3td8012252; Thu, 11 May 2017 22:03:55 GMT Date: Thu, 11 May 2017 22:03:55 +0000 From: "Alex Behm (Code Review)" To: impala-cr@cloudera.com, reviews@impala.incubator.apache.org Message-ID: Reply-To: alex.behm@cloudera.com X-Gerrit-MessageType: newchange Subject: =?UTF-8?Q?=5BImpala-ASF-CR=5D_IMPALA-5309=3A_Adds_TABLESAMPLE_clause_for_HDFS_table_refs=2E=0A?= X-Gerrit-Change-Id: Ief112cfb1e4983c5d94c08696dc83da9ccf43f70 X-Gerrit-ChangeURL: X-Gerrit-Commit: b41c215b0044ff560ed16d56d9053b25f2b3e3a0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Content-Disposition: inline User-Agent: Gerrit/2.12.7 archived-at: Thu, 11 May 2017 22:03:59 -0000 Alex Behm has uploaded a new change for review. http://gerrit.cloudera.org:8080/6868 Change subject: IMPALA-5309: Adds TABLESAMPLE clause for HDFS table refs. ...................................................................... IMPALA-5309: Adds TABLESAMPLE clause for HDFS table refs. Syntax: TABLESAMPLE SYSTEM() [REPEATABLE()] The first number specifies the percent of table bytes to sample. The second number specifies the random seed to use. The sampling is coarse-grained. Impala keeps randomly adding files to the sample until at least the desired percentage of file bytes have been reached. Examples: SELECT * FROM t TABLESAMPLE SYSTEM(10) SELECT * FROM t TABLESAMPLE SYSTEM(50) REPEATABLE(1234) Testing: - Added parser, analyser, planner, and end-to-end tests - Private core/hdfs run passed Change-Id: Ief112cfb1e4983c5d94c08696dc83da9ccf43f70 --- M fe/src/main/cup/sql-parser.cup M fe/src/main/java/org/apache/impala/analysis/BaseTableRef.java M fe/src/main/java/org/apache/impala/analysis/CollectionTableRef.java M fe/src/main/java/org/apache/impala/analysis/InlineViewRef.java M fe/src/main/java/org/apache/impala/analysis/SingularRowSrcTableRef.java M fe/src/main/java/org/apache/impala/analysis/TableRef.java A fe/src/main/java/org/apache/impala/analysis/TableSampleParams.java M fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java M fe/src/main/java/org/apache/impala/catalog/HdfsTable.java M fe/src/main/java/org/apache/impala/planner/HdfsPartitionPruner.java M fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java M fe/src/main/java/org/apache/impala/planner/SingleNodePlanner.java M fe/src/main/jflex/sql-scanner.flex M fe/src/test/java/org/apache/impala/analysis/AnalyzeStmtsTest.java M fe/src/test/java/org/apache/impala/analysis/ParserTest.java M fe/src/test/java/org/apache/impala/analysis/ToSqlTest.java M fe/src/test/java/org/apache/impala/planner/PlannerTest.java A testdata/workloads/functional-planner/queries/PlannerTest/tablesample.test A tests/query_test/test_tablesample.py 19 files changed, 695 insertions(+), 58 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/68/6868/1 -- To view, visit http://gerrit.cloudera.org:8080/6868 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newchange Gerrit-Change-Id: Ief112cfb1e4983c5d94c08696dc83da9ccf43f70 Gerrit-PatchSet: 1 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Alex Behm