History

For a full list of releases, seegithub.Downloads are available on thedownloads page.

1.16.0 / 2019-12-19

Apache Calcite Avatica 1.16.0 replaces the maven with gradle. This release adds support for Kerberos authenticationusing SPNEGO over HTTPS. In addition, there were also a few dependency updates and bug fixes. Github Actions was alsoenabled in the repository for running tests.

Compatibility: This release is testedon Linux, macOS, Microsoft Windows;using Oracle JDK 8, 9, 10, 11, 12, 13;using IBM Java 8;Guava versions 14.0 to 23.0;other software versions as specified in gradle.properties.

Features and bug fixes

  • [CALCITE-3059]Fix release script to use correct release branch name when merging to master and to use the correct variable when generating the vote email
  • [CALCITE-3090]Remove the Central configuration
  • Update owsap-dependency-check from 4.0.2 to 5.0.0
  • [CALCITE-3104]Bump httpcore from 4.4.10 to 4.4.11 (Fokko Driesprong)
  • [CALCITE-3105]Bump Jackson from 2.9.8 to 2.9.9 (Fokko Driesprong)
  • [CALCITE-3180]Bump httpclient from 4.5.6 to 4.5.9 (Fokko Driesprong)
  • [CALCITE-3324]Add create method in MetaResultSet (Robert Yokota)
  • [CALCITE-3384]Support Kerberos-authentication using SPNEGO over HTTPS (Istvan Toth)
  • [CALCITE-3199]DateTimeUtils.unixDateCeil should not return the same value as unixDateFloor (Zhenghua Gao)
  • [CALCITE-3412]FLOOR(timestamp TO WEEK) gives wrong result: Fix DateTimeUtils.julianDateFloor so that unixDateFloor etc. give the right result
  • Implement Gradle-based build scripts
  • Sign release artifacts only, skip signing for -SNAPSHOT
  • Add source=1.8 to javadoc options, fix javadoc warnings
  • Add -PskipJavadoc to skip publication of the javadocs (to speedup publishToMavenLocal)
  • [CALCITE-3490]Upgrade Jackson to 2.10.0
  • Bump release plugin 1.44.0 -> 1.45.0: do not require GPG key for publishDist
  • Bump release plugins 1.45.0 -> 1.46.0: avoid failures on Gralde upgrade, fix gitignore handling
  • Add -PenableMavenLocal and -PenableGradleMetadata build options
  • Update build script: simplify properties, fix javadoc build for non UTF8 default encoding
  • Update release plugins to 1.48.0 to workaround SVN 1.9 issue with mv+cp
  • Sort dependencies, use api(javax.servlet), implementation(slf4j-api)
  • @PackageMarker is no longer needed
  • License header is managed with Spotless, there’s no need to double-check it with Checkstyle
  • Whitespace is managed with Spotless, so the check is removed from Checkstyle config
  • Upgrade to Gradle 6.0.1 to prevent pushing .sha256 and .sha512 to Nexus
  • Add gradle task ‘aggregateJavadocIncludingTests’ that builds javadoc for both main and test
  • [CALCITE-3493]Update docker script to use gradle
  • Use Gitbox for pushing tags when making a release
  • [CALCITE-3573]Upgrade to Gradle 6.0 container to build releases and javadoc
  • Configure Git tags to be pushed to calcite-avatica repository not calcite
  • Stop building zip archives when building using gradle

Tests

  • Use GitHub Actions for Windows CI
  • Add Travis job with building Calcite master
  • Show standard streams in Gradle tests
  • Skip slow Calcite tests
  • Add GitHub Actions macOS
  • Fix AvaticaSpnegoTest for canonicalHostName(“localhost”) != “localhost”: Avatica HTTP client always uses CANONICAL_HOSTNAME which confuses test code.
  • Use Spotless and .editorconfig for import order normalization instead of Checkstyle
  • Add option to skip signing: -PskipSigning
  • Fetch Calcite from apache/calcite repository for integration testing
  • GitHub Actions: actions/checkout@master -> v1.1.0 to avoid unexpected failures

Website and Documentation

  • Add JavaScript client to client list
  • Update avatica/docs/howto.md: SVN -> Git, fix wording
  • Exclude “site/target” from Jekyll build: It prevents generation of unwanted site/target/avatica/target directory
  • Configure Jekyll to use Etc/GMT+5 timezone for consistent page urls
  • Fix links to javadoc
  • Remove instructions to close Nexus repository when building a rc as this is now automated

1.15.0 / 2019-05-13

Apache Calcite Avatica 1.15.0 is a small release that reverts CALCITE-2845 due to some incompatibilities with downstreamclients.

Compatibility: This release is testedon Linux, macOS, Microsoft Windows;using Oracle JDK 8, 9, 10, 11, 12, 13;using IBM Java 8;Guava versions 14.0 to 23.0;other software versions as specified in pom.xml.

Features and bug fixes

  • [CALCITE-3043]Add the ability to publish and promote releases using docker
  • [CALCITE-3040]Revert CALCITE-2845 due to incompatibilities with downstream clients

Website and Documentation

  • [CALCITE-3033]Add navigation item for avatica-go HOWTO documentation

1.14.0 / 2019-04-29

Apache Calcite Avatica 1.14.0 includes around 13 bugs fixes and enhancements. Jetty was upgraded to 9.4.15v20190215,which fixes a vulnerability of moderate severity: CVE-2018-12545.

Compatibility: This release is testedon Linux, macOS, Microsoft Windows;using Oracle JDK 8, 9, 10, 11, 12, 13;using IBM Java 8;Guava versions 14.0 to 23.0;other software versions as specified in pom.xml.

Features and bug fixes

  • [CALCITE-2789]Bump version dependencies Jan 2019
  • [CALCITE-2845]Avoid duplication of exception messages
  • [CALCITE-2950]Avatica DriverVersion.load leaks InputStream
  • Improve exception message in AbstractService
  • [CALCITE-2776]Fix wrong value when accessing struct types with one attribute
  • [CALCITE-2269]Enable Error Prone checking
  • [CALCITE-2945]Use Boolean#equals in Boolean object compare
  • [CALCITE-2972]Upgrade jetty to 9.4.15.v20190215
  • [CALCITE-2987]Use maven image instead of maven:alpine when building release using docker
  • [CALCITE-2882]Connection properties are lost after timeout (Bake)
  • Fix misspelled JDBC connection max duration property: expiryduration (Lanny)
  • [CALCITE-2939]Fix NPE when executeBatch is array type (Bake)

Tests

  • [CALCITE-2728]Update appveyor.yml to enable Appveyor testing against JDK 11
  • [CALCITE-2961]Enable Travis to test against JDK 13

Website and Documentation

  • Update to new git URL (switch to gitbox)
  • Add links to git commits back to download pages
  • Switch from maven:alpine to maven docker image for generating javadoc when publishing the site
  • [CALCITE-2922]Update link to Apache Jenkins Calcite-Avatica job

1.13.0 / 2018-12-04

Apache Calcite Avatica 1.13.0 includes around 30 bugs fixes and enhancements. This release adds the ability toprepare and make a release, run tests and execute mvn clean in a docker container.

Compatibility: This release is testedon Linux, macOS, Microsoft Windows;using Oracle JDK 8, 9, 10, 11, 12;using IBM Java 8;Guava versions 14.0 to 23.0;other software versions as specified in pom.xml.

Features and bug fixes

  • [CALCITE-2386]Naively wire up struct support
  • [CALCITE-2390]Remove uses of X509CertificateObject which is deprecated in current version of bouncycastle
  • [CALCITE-2467]Update owasp-dependency-check maven plugin to 3.3.1, protobuf-java to 3.5.1, jackson to 2.9.6 and jetty to 9.4.11.v20180605
  • [CALCITE-2503]AvaticaCommonsHttpClientImpl client needs to set user-token on HttpClientContext before sending the request
  • [CALCITE-2570]Upgrade forbiddenapis to 2.6 for JDK 11 support
  • [CALCITE-1183]Upgrade kerby to 1.1.1 and re-enable AvaticaSpnegoTest
  • [CALCITE-2486]Upgrade Apache parent POM to version 21 and update other dependencies
  • [CALCITE-2583]Upgrade dropwizard metrics to 4.0.3
  • [CALCITE-1006]Enable spotbugs-maven-plugin
  • Move spotbugs-filter.xml to src/main/config/spotbugs/
  • Update usage of JCommander after upgrading to 1.72
  • [CALCITE-2587]Regenerate protobuf files for protobuf 3.6.1
  • [CALCITE-2594]Ensure forbiddenapis and maven-compiler use the correct JDK version
  • [CALCITE-2595]Add maven wrapper
  • [CALCITE-2385]Add flag to disable dockerfile checks when executing a dry-run build
  • [CALCITE-2676]Add release script and docker-compose.yml to support building releases using docker
  • [CALCITE-2680]Downgrade maven-scm-provider to 1.10.0 due to API incompatibility that prevents releases from building
  • Update release script to use GPG agent
  • [CALCITE-2681]Add maven-scm-api as a dependency, so that Avatica can build
  • Include -Dgpg.keyname when executing release:perform in the release script
  • Prompt user for git username when using release script
  • Fix release script to ensure git usernames are not truncated
  • Remove requirement to set maven master password when using the release script
  • [CALCITE-2682]Add ability to run tests in docker
  • Update travis-ci status badge to the correct one in README.md
  • [CALCITE-2385]Update travis configuration to disable dockerfile checks during testing
  • [CALCITE-2698]Use Docker Hub hooks to select Avatica version during image build and publish HSQLDB image

Tests

  • [CALCITE-2568]Ensure that IBM JDK TLS cipher list matches Oracle/OpenJDK for Travis CI
  • [CALCITE-2655]Enable Travis to test against JDK12
  • [CALCITE-2412]Add appveyor.yml to run Windows tests

Website and Documentation

  • Fix broken links to Github release on the history page
  • [CALCITE-2381]Document how to authenticate against the Apache maven repository, select GPG keys and version numbers when buildinga release
  • Fix Go client download links
  • Fix download link to release history in news item template
  • [CALCITE-2550]Update download links for avatica-go to link to apache-calcite-avatica-go-x.x.x-src.tar.gz for release 3.2.0 and onwards
  • [CALCITE-2574]Update download pages to include instructions for verifying downloaded artifacts
  • [CALCITE-2577]Update URLs on download page to HTTPS
  • Update links on Go client download page to reference go_history.html and not history.html

1.12.0 / 2018-06-24

Apache Calcite Avatica 1.12.0 includes more than 20 bugs fixes and new features. ZIP archives will no longer beproduced from this release onwards.

Compatibility: This release is testedon Linux, macOS, Microsoft Windows;using Oracle JDK 8, 9, 10, 11;using IBM Java 8;Guava versions 14.0 to 23.0;other software versions as specified in pom.xml.

Features and bug fixes

  • [CALCITE-1520]Implement method AvaticaConnection.isValid()
  • [CALCITE-2212]Enforce minimum JDK 8 via maven-enforcer-plugin
  • [CALCITE-2268]Bump HSQLDB to 2.4.0 in Avatica Docker image
  • [CALCITE-2272]Bump dependencies: Apache Parent POM 19, JDK 10 Surefire and JDK 10 JavadocFix Javadoc generation
  • [CALCITE-2218]Fix AvaticaResultSet.getRow()
  • Add Docker Hub image for HSQLDB
  • [CALCITE-2289]Enable html5 for Javadoc on JDK 9+
  • [CALCITE-2284]Allow Jetty Server to be customized before startup (Alex Araujo)
  • [CALCITE-2333]Stop generating ZIP archives for release
  • Bump HSQLDB dependency to 2.4.1
  • [CALCITE-2294]Allow customization for AvaticaServerConfiguration for plugging newauthentication mechanisms (Karan Mehta)
  • [CALCITE-1884]DateTimeUtils produces incorrect results for days before the Gregoriancutover (Haohui Mai and Sergey Nuyanzin)
  • [CALCITE-2303]Support MICROSECONDS, MILLISECONDS, EPOCH, ISODOW, ISOYEAR andDECADE time units in EXTRACT function (Sergey Nuyanzin)
  • [CALCITE-2350]Fix cannot shade Avatica with Guava 21.0 or higher
  • [CALCITE-2341]Fix Javadoc plugin incompatibility
  • [CALCITE-2352]Update checkstyle to 6.18 and update suppressions.xml
  • [CALCITE-2219]Update Connection, Statement, PreparedStatement and ResultSet to throwan exception if resource is closed
  • [CALCITE-2361]Upgrade Bouncycastle to 1.59
  • [CALCITE-2299]Add support for NANOSECOND in TimeUnit and TimeUnitRange
  • [CALCITE-2285]Support client cert keystore for Avatica client (Karan Mehta)

Tests

  • [CALCITE-2210]Remove oraclejdk7, add oraclejdk9, add oraclejdk10, and add ibmjava to.travis.yml
  • [CALCITE-2255]Add JDK 11 .travis.yml
  • [CALCITE-2022]Add dynamic drive calculation to correctly determine trust store location whentesting on Windows (Sergey Nuyanzin)

Website and Documentation

  • [CALCITE-1160]Redirect from Avatica community to Calcite community
  • [CALCITE-1937]Update Avatica website to support the inclusion of Avatica-Go’s content and addoption for using docker to develop and build the website
  • [CALCITE-1914]Add DOAP (Description of a Project) file for Avatica
  • Fix broken link in HOWTO
  • Add missing license header to avatica-go docs generation script

1.11.0 / 2018-03-09

Apache Calcite Avatica 1.11.0 adds support for JDK 10 and dropssupport for JDK 7. There are more than 20 bug fixes and new features.

Compatibility: This release is testedon Linux, macOS, Microsoft Windows;using Oracle JDK 8, 9, 10;Guava versions 14.0 to 23.0;other software versions as specified in pom.xml.

Features and bug fixes

  • Generate sha256 checksums for releases (previous releases used md5 and sha1)
  • [CALCITE-2199]Allow methods overriding AvaticaResultSet.getStatement() to throw aSQLException (Benjamin Cogrel)
  • [CALCITE-508]Ensure that RuntimeException is wrapped in SQLException
  • [CALCITE-2013]Upgrade HSQLDB to 2.4
  • [CALCITE-2154]Upgrade jackson to 2.9.4
  • [CALCITE-2140]Basic implementation of Statement.getMoreResults()
  • [CALCITE-2086]Increased max allowed HTTP header size to 64KB
  • [CALCITE-2073]Allow disabling of the maven-protobuf-plugin
  • [CALCITE-2017]Support JAAS-based Kerberos login on IBM Java
  • [CALCITE-2003]Remove global synchronization on openConnection
  • [CALCITE-1922]Allow kerberos v5 OID in SPNEGO authentication
  • [CALCITE-1915]Work around a Jetty bug where the SPNEGO challenge is not sent
  • [CALCITE-1902]In AvaticaResultSet methods, throw SQLFeatureNotSupportedException ratherthan UnsupportedOperationException (Sergio Sainz)
  • [CALCITE-1487]Set the request as handled with authentication failures
  • [CALCITE-1904]Allow SSL hostname verification to be turned off
  • [CALCITE-1879]Log incoming protobuf requests at TRACE
  • [CALCITE-1880]Regenerate protobuf files for 3.3.0
  • [CALCITE-1836]Upgrade to protobuf-java-3.3.0
  • [CALCITE-1195]Add a curl+jq example for interacting with Avatica
  • [CALCITE-1813]Use correct noop-driver artifactId

Tests

  • [CALCITE-2145]RemoteDriverTest.testBatchInsertWithDates fails in certain time zones(Alessandro Solimando)
  • Fix tests on Windows; disable SPNEGO test on Windows

Web site and documentation

  • Update description of the signature field in ResultSetResponse
  • Correct field name in PrepareAndExecuteRequest documentation (Lukáš Lalinský)
  • [CALCITE-2083]Update documentation
  • [CALCITE-2036]Fix “next” link in history.html
  • [CALCITE-1878]Update the website for protobuf changes in 1.10.0

1.10.0 / 2017-05-30

Apache Calcite Avatica 1.10.0 is the first release sinceAvatica’s git repositoryseparated fromCalcite’s repository in[CALCITE-1717].Avatica now runs on JDK 9 (and continues to run on JDK 7 and 8),and there is now a Docker image for an Avatica server.You may now send and receive Array data via the JDBC API.Several improvements to date/time support in DateTimeUtils.

Compatibility: This release is testedon Linux, macOS, Microsoft Windows;using Oracle JDK 7, 8, 9;Guava versions 14.0 to 19.0;other software versions as specified in pom.xml.

Features and bug fixes

  • [CALCITE-1690]Timestamp literals cannot express precision above millisecond
  • [CALCITE-1539]Enable proxy access to Avatica server for third party on behalf of end users
  • [CALCITE-1756]Differentiate between implicitly null and explicitly null TypedValues
  • [CALCITE-1050]Array support for Avatica
  • [CALCITE-1746]Remove KEYS file from git and from release tarball
  • [CALCITE-1353]Convert first_frame_max_size to an int32
  • [CALCITE-1744]Clean up the Avatica poms
  • [CALCITE-1741]Upgrade maven-assembly-plugin to version 3.0.0
  • [CALCITE-1364]Docker images for an Avatica server
  • [CALCITE-1717]Remove Calcite code and lift Avatica
  • [CALCITE-1700]De-couple the HsqldbServer into a generic JDBC server
  • [CALCITE-1699]Statement may be null
  • [CALCITE-1667]Forbid calls to JDK APIs that use the default locale, time zone or characterset
  • [CALCITE-1664]CAST('<string>' as TIMESTAMP) wrongly adds part of sub-second fraction to thevalue
  • [CALCITE-1654]Avoid generating a string from the Request/Response when it will not be logged
  • [CALCITE-1609]In DateTimeUtils, implement unixDateExtract and unixTimeExtract for moretime units
  • [CALCITE-1608]Move addMonths and subtractMonths methods from Calcite class SqlFunctionsto Avatica class DateTimeUtils
  • [CALCITE-1600]In Meta.Frame.create(), change type of offset parameter from int to long(Gian Merlino)
  • [CALCITE-1602]Remove uses of deprecated APIs
  • [CALCITE-1599]Remove unused createIterable call in LocalService (Gian Merlino)
  • [CALCITE-1576]Use the protobuf-maven-plugin
  • [CALCITE-1567]JDK9 support
  • Remove non-ASCII characters from Java source files
  • [CALCITE-1538]Support truststore and truststore_password JDBC options
  • [CALCITE-1485]Upgrade Avatica’s Apache parent POM to version 18

Tests

  • [CALCITE-1752]Use URLDecoder instead of manually replacing “%20” in URLs
  • [CALCITE-1736]Address test failures when the path contains spaces
  • [CALCITE-1568]Upgrade mockito to 2.5.5

Web site and documentation

  • [CALCITE-1743]Add instructions to release docs to move git tag from rcN to rel/

1.9.0 / 2016-11-01

Apache Calcite Avatica 1.9.0 includes various improvements to make itmore robust and secure, while maintaining API and protocolcompatibility with previous versions. We now include non-shaded andshaded artifacts, to make it easier to embed Avatica in yourapplication. There is improved support for the JDBC API, includingbetter type conversions and support for canceling statements. Thetransport is upgraded to use protobuf-3.1.0 (previously 3.0 beta).

Compatibility: This release is testedon Linux, macOS, Microsoft Windows;using Oracle JDK 1.7, 1.8;Guava versions 14.0 to 19.0;other software versions as specified in pom.xml.

Features and bug fixes

  • [CALCITE-1471]HttpServerSpnegoWithJaasTest.testAuthenticatedClientsAllowed fails on Windows(Aaron Mihalik)
  • [CALCITE-1464]Upgrade Jetty version to 9.2.19v20160908
  • [CALCITE-1463]In standalone-server jar, relocate dependencies rather than excluding them
  • [CALCITE-1355]Upgrade to protobuf-java 3.1.0
  • [CALCITE-1462]Remove Avatica pom cruft
  • [CALCITE-1458]Add column values to the deprecated protobuf attribute
  • [CALCITE-1433]Add missing dependencies to avatica-server
  • [CALCITE-1433]Fix missing avatica test-jar dependency
  • [CALCITE-1423]Add method ByteString.indexOf(ByteString, int)
  • [CALCITE-1408]ResultSet.getXxx methods should throw SQLDataException if cannot convert tothe requested type (Laurent Goujon)
  • [CALCITE-1410]Fix JDBC metadata classes (Laurent Goujon)
  • [CALCITE-1224]Publish non-shaded and shaded versions of Avatica client artifacts
  • [CALCITE-1407]MetaImpl.fieldMetaData wrongly uses 1-based column ordinals
  • [CALCITE-1361]Remove entry from AvaticaConnection.flagMap when session closed
  • [CALCITE-1399]Make the jcommander SerializationConverter public
  • [CALCITE-1394]Javadoc warnings due to CoreMatchers.containsString and mockito-all
  • [CALCITE-1390]Avatica JDBC driver wrongly modifies Properties object
  • [CALCITE-1371]PreparedStatement does not process Date type correctly (Billy (Yiming) Liu)
  • [CALCITE-1301]Add cancel flag to AvaticaStatement
  • [CALCITE-1315]Retry the request on NoHttpResponseException
  • [CALCITE-1300]Retry on HTTP-503 in hc-based AvaticaHttpClient
  • [CALCITE-1263]Case-insensitive match and null default value for enum properties
  • [CALCITE-1282]Adds an API method to set extra allowed Kerberos realms

Tests

  • [CALCITE-1226]Disable AvaticaSpnegoTest due to intermittent failures

Web site and documentation

1.8.0 / 2016-06-04

Apache Calcite Avatica 1.8.0 continues the focus on compatibility with previousversions while also adding support for authentication between Avatica client and server.Performance, notably on the write-path, is also major area of improvementin this release, increasing as much as two to three times over previous versionswith the addition of new API support. The documentation for both users and developerscontinues to receive improvements.

A number of protocol issues are resolved relating to the proper serialization ofdecimals, the wire-API semantics of signed integers that were marked as unsignedintegers, and the unintentional Base64-encoding of binary data using the ProtocolBuffers serialization in Avatica. These issues were fixed in such a way to bebackwards compatible, but older clients/servers may still compute incorrect data.

Users of Avatica 1.7.x should not notice any issues in upgrading existing applicationsand are encouraged to upgrade as soon as possible.

Features and bug fixes

  • [CALCITE-1159]Support Kerberos-authenticated clients using SPNEGO
  • [CALCITE-1173]Basic and Digest authentication
  • [CALCITE-1249]L&N incorrect for source and non-shaded jars for avatica-standalone-server module
  • [CALCITE-1103]Decimal data serialized as Double in Protocol Buffer API
  • [CALCITE-1205]Inconsistency in protobuf TypedValue field names
  • [CALCITE-1207]Allow numeric connection properties, and K, M, G suffixes
  • [CALCITE-1209]Byte strings not being correctly decoded when sent to avatica using protocol buffers
  • [CALCITE-1213]Changing AvaticaDatabaseMetaData from class to interface breaks compatibility
  • [CALCITE-1218]Mishandling of uncaught exceptions results in no ErrorResponse sent to client
  • [CALCITE-1230]Add SQLSTATE reference data as enum SqlState
  • [CALCITE-1243]max_row_count in protobuf Requests should be signed int
  • [CALCITE-1247]JdbcMeta#prepare doesn’t set maxRowCount on the Statement
  • [CALCITE-1254]Support PreparedStatement.executeLargeBatch
  • [CALCITE-643]User authentication for avatica clients
  • [CALCITE-1128]Support addBatch()/executeBatch() in remote driver
  • [CALCITE-1179]Extend list of time units and time unit ranges
  • [CALCITE-1180]Support clearBatch() in remote driver
  • [CALCITE-1185]Send back ErrorResponse on failure to parse requests
  • [CALCITE-1192]Document protobuf and json REP types with examples
  • [CALCITE-1214]Support url-based kerberos login
  • [CALCITE-1236]Log exceptions sent back to client in server log
  • [CALCITE-836]Provide a way for the Avatica client to query the server versions
  • [CALCITE-1156]Bump jetty version
  • [CALCITE-1184]Update Kerby dependency to 1.0.0-RC2

Tests

  • [CALCITE-1190]Cross-Version Compatibility Test Harness
  • [CALCITE-1113]Parameter precision and scale are not returned from Avatica REST API
  • [CALCITE-1186]Parameter ‘signed’ metadata is always returned as false
  • [CALCITE-1189]Unit test failure when JVM default charset is not UTF-8
  • [CALCITE-1061]RemoteMetaTest#testRemoteStatementInsert’s use of hsqldb isn’t guarded
  • [CALCITE-1194]Avatica metrics has non-test dependency on JUnit
  • [CALCITE-835]Unicode character seems to be handled incorrectly in Avatica

Web site and documentation

1.7.1 / 2016-03-18

This is the first release of Avatica as an independent project. (Itis still governed by Apache Calcite’s PMC, and stored in the same gitrepository as Calcite, but releases are no longer synchronized, andAvatica does not depend on any Calcite modules.)

One notable technical change is that we have replaced JUL (java.util.logging)with SLF4J. SLF4J provides an API that Avatica can useindependent of the logging implementation. This is moreflexible for users: they can configure Avatica’s logging within theirown chosen logging framework. This work was done in[CALCITE-669].

If you have configured JUL in Calcite/Avatica previously, you’llnotice some differences, because JUL’s FINE, FINER and FINESTlogging levels do not exist in SLF4J. To deal with this, we mappedFINE to SLF4J’s DEBUG level, and mapped FINER and FINEST toSLF4J’s TRACE.

The performance of Avatica was an important focus for this release as well.Numerous improvements aimed at reducing the overall latency of Avatica RPCswas reduced. Some general testing showed an overall reduction of latencyby approximately 15% over the previous release.

Compatibility: This release is tested on Linux, Mac OS X, MicrosoftWindows; using Oracle JDK 1.7, 1.8; Guava versions 12.0.1 to 19.0;other software versions as specified in pom.xml.

Features and bug fixes

  • [CALCITE-1156]Upgrade Jetty from 9.2.7.v20150116 to 9.2.15.v20160210
  • [CALCITE-1141]Bump version.minor for Avatica
  • [CALCITE-1132]Update artifactId, groupId and name for Avatica
  • [CALCITE-1064]Address problematic maven-remote-resources-plugin
  • In TimeUnit add WEEK, QUARTER, MICROSECOND values, and change type ofmultiplier
  • Update groupId when Calcite POMs reference Avatica modules
  • [CALCITE-1078]Detach avatica from the core calcite Maven project
  • [CALCITE-1117]Default to a commons-httpclient implementation
  • [CALCITE-1118]Add a noop-JDBC driver for testing Avatica server
  • [CALCITE-1119]Additional metrics instrumentation for request processing
  • [CALCITE-1094]Replace ByteArrayOutputStream to avoid synchronized writes
  • [CALCITE-1092]Use singleton descriptor instances for protobuf field presence checks
  • [CALCITE-1093]Reduce impact of ArrayList performance
  • [CALCITE-1086]Avoid sending Signature on Execute for updates
  • [CALCITE-1031]In prepared statement, CsvScannableTable.scan is called twice
  • [CALCITE-1085]Use a NoopContext singleton in NoopTimer
  • [CALCITE-642]Add an avatica-metrics API
  • [CALCITE-1071]Improve hash functions
  • [CALCITE-669]Mass removal of Java Logging for SLF4J
  • [CALCITE-1067]Test failures due to clashing temporary table names
  • [CALCITE-999]Clean up maven POM files

Web site and documentation

  • [CALCITE-1142]Create a README for Avatica
  • [CALCITE-1144]Fix LICENSE for Avatica
  • [CALCITE-1143]Remove unnecessary NOTICE for Avatica
  • [CALCITE-1139]Update Calcite’s KEYS and add a copy for Avatica
  • [CALCITE-1140]Release notes and website updates for Avatica 1.7
  • Instructions for Avatica site
  • New logo and color scheme for Avatica site
  • [CALCITE-1079]Split out an Avatica website, made to slot into the Calcite site at /avatica

Past releases

Prior to release 1.7.1, Avatica was released as part of Calcite. Mavenmodules had groupId ‘org.apache.calcite’ and module names‘calcite-avatica’, ‘calcite-avatica-server’ etc.

Please refer to theCalcite release pagefor information about previous Avatica releases.