| commit | 701a3166669a84563a76b48bc8e35e214d20187b | [log] [tgz] |
|---|---|---|
| author | Paul Rogers <par0328@yahoo.com> | Sun Nov 10 16:17:49 2019 -0800 |
| committer | Volodymyr Vysotskyi <vvovyk@gmail.com> | Thu Nov 14 17:21:17 2019 +0200 |
| tree | 96f64fa4f82cb1c73104a0a8b156cc485a768d71 | |
| parent | 9d8ac02d05cf6f23ddc80065066722b121577656 [diff] |
DRILL-7442: Create multi-batch row set reader Adds a ResultSetReader that works across multiple batches in a result set. Reuses the same row set and readers if schema is unchanged, creates a new set if the schema changes. Adds a unit test for the result set reader. Adds a "rebind" capability to the row set readers to focus on new buffers under an existing set of vectors. Used when a new batch arrives, if the schema is unchanged. Extends row set classses to be aware of the BatchAccessor class which encapsulates a container and optional selection vector, and tracks schema changes. Moves row set tests into the same package as the row sets. (Row set classes were moved a while back, but the tests were not moved.) Renames some BatchAccessor methods. closes #1897
Apache Drill is a distributed MPP query layer that supports SQL and alternative query languages against NoSQL and Hadoop data storage systems. It was inspired in part by Google's Dremel.
Please read Environment.md for setting up and running Apache Drill. For complete developer documentation see DevDocs.md
Please see the Apache Drill Website or the Apache Drill Documentation for more information including:
Apache Drill is an Apache Foundation project and is seeking all types of users and contributions. Please say hello on the Apache Drill mailing list.You can also join our Google Hangouts or join our Slack Channel if you need help with using or developing Apache Drill. (More information can be found on Apache Drill website).
This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See http://www.wassenaar.org/ for more information.
The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code. The following provides more details on the included cryptographic software: Java SE Security packages are used to provide support for authentication, authorization and secure sockets communication. The Jetty Web Server is used to provide communication via HTTPS. The Cyrus SASL libraries, Kerberos Libraries and OpenSSL Libraries are used to provide SASL based authentication and SSL communication.