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| |
| <h1>Apache Kudu 1.8.0 Release Notes</h1> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_upgrade_notes"><a class="link" href="#rn_1.8.0_upgrade_notes">Upgrade Notes</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Upgrading directly from Kudu 1.7.0 is supported and no special upgrade steps are |
| required. A rolling upgrade may work, however it has not been tested. When upgrading |
| Kudu, it is recommended to first shut down all Kudu processes across the cluster, then |
| upgrade the software on all servers, then restart the Kudu processes on all servers in |
| the cluster.</p> |
| </li> |
| <li> |
| <p>Kudu Flume Sink released with Kudu 1.8.0 is compiled against Apache Flume 1.8 and might |
| not function with earlier versions of Flume. Note that Flume 1.8 requires Java 1.8 or |
| higher.</p> |
| </li> |
| <li> |
| <p>Hadoop 3.0+ requires Java 8 at runtime even though the Kudu Hadoop integration is Java 7 |
| compatible. Hadoop 3.1 is the default dependency version as of Kudu 1.8.0, used by |
| certain features in the Java client.</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_obsoletions"><a class="link" href="#rn_1.8.0_obsoletions">Obsoletions</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>The <code>-table_num_buckets</code> configuration option of the <code>kudu perf loadgen</code> tool is now |
| removed in favor of <code>-table_num_hash_partitions</code> and <code>-table_num_range_partitions</code> |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-1861">KUDU-1861</a>).</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_deprecations"><a class="link" href="#rn_1.8.0_deprecations">Deprecations</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Support for Java 7 has been deprecated since Kudu 1.5.0 and may be removed in the next |
| major release.</p> |
| </li> |
| <li> |
| <p>The <code>producer.skipMissingColumn</code>, <code>producer.skipBadColumnValue</code>, and |
| <code>producer.warnUnmatchedRows</code> Kudu Flume sink configuration parameters have been |
| deprecated in favor of <code>producer.missingColumnPolicy</code>, <code>producer.badColumnValuePolicy</code>, |
| and <code>producer.unmatchedRowPolicy</code> respectively (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-1882">KUDU-1882</a>).</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_new_features"><a class="link" href="#rn_1.8.0_new_features">New features</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Examples showcasing functionality in C++, Java, and Python, previously |
| hosted in a separate repository have been added. They can be found in the |
| <code><a href="https://github.com/apache/kudu/tree/master/examples">examples/</a></code> |
| top-level subdirectory.</p> |
| </li> |
| <li> |
| <p>Added <code>kudu diagnose parse_stacks</code>, a tool to parse sampled stack traces out of a |
| diagnostics log (see <a href="https://issues.apache.org/jira/browse/KUDU-2353">KUDU-2353</a>).</p> |
| </li> |
| <li> |
| <p>Added support for <code>IS NULL</code> and <code>IS NOT NULL</code> predicates to the Kudu Python client (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2399">KUDU-2399</a>).</p> |
| </li> |
| <li> |
| <p>Introduced <a href="administration.html#rebalancer_tool">manual data rebalancer</a> into the kudu |
| CLI tool. The rebalancer can be used to redistribute table replicas among tablet |
| servers. The rebalancer can be run via <code>kudu cluster rebalance</code> sub-command. Using the |
| new tool, it’s possible to rebalance Kudu clusters of version 1.4.0 and newer.</p> |
| </li> |
| <li> |
| <p>Added <code>kudu tserver get_flags</code> and <code>kudu master get_flags</code>, two tools that allow |
| superusers to retrieve all the values of command line flags from remote Kudu processes. |
| The <code>get_flags</code> tools support filtering the returned flags by tag, and by default will |
| return only flags that were explicitly set.</p> |
| </li> |
| <li> |
| <p>Added <code>kudu tablet unsafe_replace_tablet</code>, a tool to replace a tablet with a new one. |
| This tool is meant to be used to recover a table when one of its tablets has permanently |
| lost all replicas. The data in the tablet that is replaced is lost, so this tool should |
| only be used as a last resort (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2290">KUDU-2290</a>).</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_improvements"><a class="link" href="#rn_1.8.0_improvements">Optimizations and improvements</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>There is a new metric for each tablet replica tracking the number of election failures |
| since the last successful election attempt and the time since the last heartbeat from |
| the leader (see <a href="https://issues.apache.org/jira/browse/KUDU-2287">KUDU-2287</a>).</p> |
| </li> |
| <li> |
| <p>Kudu now supports building and running on Ubuntu 18.04 (“Bionic Beaver”) (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2427">KUDU-2427</a>).</p> |
| </li> |
| <li> |
| <p>Kudu now supports building and running against OpenSSL 1.1 (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-1889">KUDU-1889</a>).</p> |
| </li> |
| <li> |
| <p>Added Kerberos support to the Kudu Flume sink (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2012">KUDU-2012</a>).</p> |
| </li> |
| <li> |
| <p>The Kudu Spark connector now supports Spark Streaming DataFrames (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2539">KUDU-2539</a>).</p> |
| </li> |
| <li> |
| <p>Added <code>-tables</code> filtering argument to <code>kudu table list</code> (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2529">KUDU-2529</a>).</p> |
| </li> |
| <li> |
| <p>Clients now support setting a limit on the number of returned rows in scans (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-16">KUDU-16</a>).</p> |
| </li> |
| <li> |
| <p>Added Pandas support to the Python client (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-1276">KUDU-1276</a>).</p> |
| </li> |
| <li> |
| <p>Enabled configuration of mutation buffer in the Python client (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2441">KUDU-2441</a>).</p> |
| </li> |
| <li> |
| <p>Added a <code>keepAlive</code> API call to the <code>KuduScanner</code> and <code>AsyncKuduScanner</code> in the Java |
| client. This API can be used to keep the scanners alive on the server when processing |
| of messages will take longer than the scanner TTL (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2095">KUDU-2095</a>).</p> |
| </li> |
| <li> |
| <p>The Kudu Spark integration now uses the keepAlive API when reading data. By default it |
| will call keepAlive on a scanner with a period of 15 seconds. This will ensure that |
| Spark jobs with large batch sizes or slow processing times do not fail with scanner not |
| found errors (see <a href="https://issues.apache.org/jira/browse/KUDU-2563">KUDU-2563</a>).</p> |
| </li> |
| <li> |
| <p>Number of reactor threads in the C++ client is now configurable (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2368">KUDU-2368</a>).</p> |
| </li> |
| <li> |
| <p>Added an optimization to reduce CPU consumption when performing hot metadata lookups in |
| the C++ client (see <a href="https://issues.apache.org/jira/browse/KUDU-1977">KUDU-1977</a>).</p> |
| </li> |
| <li> |
| <p>Added an optimization to avoid bottlenecks on <code>getpwuid_r()</code> in libnss during a Raft |
| leader election storm (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2395">KUDU-2395</a>).</p> |
| </li> |
| <li> |
| <p>Improved rowset tree pruning making scans with open-ended intervals on primary key (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2566">KUDU-2566</a>).</p> |
| </li> |
| <li> |
| <p>The <code>kudu perf loadgen</code> tool now supports generating range-partitioned tables. The |
| <code>-table_num_buckets</code> configuration is now removed in favor of |
| <code>-table_num_hash_partitions</code> and <code>-table_num_range_partitions</code> (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-1861">KUDU-1861</a>).</p> |
| </li> |
| <li> |
| <p>CFile checksum failures will now cause the affected tablet replicas to be failed and |
| re-replicated elsewhere (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2469">KUDU-2469</a>).</p> |
| </li> |
| <li> |
| <p>Servers are now able to start up with data directories missing on disk (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2359">KUDU-2359</a>).</p> |
| </li> |
| <li> |
| <p>The <code>kudu perf loadgen</code> tool now creates tables with a period-separated database name, |
| for example <code>default.loadgen_auto_abc123</code>. This new behavior does not take effect if the |
| <code>--table</code> flag is provided. The database of the table can be changed using a new |
| <code>--auto_database</code> flag. This change is made in anticipation of an eventual Kudu/HMS |
| integration (see <a href="https://jira.apache.org/jira/browse/KUDU-2191">KUDU-2191</a>).</p> |
| </li> |
| <li> |
| <p>Introduced <code>FAILED_UNRECOVERABLE</code> replica health status. This is to mark replicas which |
| are not able to catch up with the leader due to GC-collected segments of WAL and other |
| unrecoverable cases like disk failure. With that, the replica management scheme becomes |
| hybrid: the system evicts replicas with <code>FAILED_UNRECOVERABLE</code> health status before |
| adding a replacement if it anticipates that it can commit the transaction, while in |
| other cases it first adds a non-voter replica and removes the failed one only after |
| promoting a newly added replica to voter role.</p> |
| </li> |
| <li> |
| <p>Two additional configuration parameters, <code>socketReadTimeoutMs</code> and <code>scanRequestTimeout</code> |
| have been added to the Spark connector to allow better tuning to avoid scan timeouts |
| under high load.</p> |
| </li> |
| <li> |
| <p>The <code>kudu table</code> tool now supports two new options to rename tables and columns, |
| <code>rename_table</code> and <code>rename_column</code> respectively.</p> |
| </li> |
| <li> |
| <p>Kudu will now wait for the clock to become synchronized at startup, controlled by a new |
| flag <code>-ntp_initial_sync_wait_secs</code> (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2242">KUDU-2242</a>).</p> |
| </li> |
| <li> |
| <p>Tablet deletions are now throttled, which will help Kudu clusters remain stable even |
| when many tablets are deleted at once. The number of tablets that a tablet server will |
| delete at once is controlled by the new flag <code>-num_tablets_to_delete_simultaneously</code> |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-2289">KUDU-2289</a>).</p> |
| </li> |
| <li> |
| <p>The <code>kudu cluster ksck</code> tool has been significantly enhanced. It now checks master |
| health and consensus status, displays any unsafe or hidden flags set in the cluster, and |
| produces a summary of the Kudu versions running on the master and tablet servers. In |
| addition, it now supports JSON output, both in pretty-printed and compact form. The |
| output format is controlled by the <code>-ksck_format</code> flag.</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_fixed_issues"><a class="link" href="#rn_1.8.0_fixed_issues">Fixed Issues</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>When a tablet server was wiped and recreated with the same RPC address, <code>ksck</code> listed it |
| twice, both as healthy, even though only one of them was there. This bug is now fixed by |
| verifying the UUID of the server (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2364">KUDU-2364</a>).</p> |
| </li> |
| <li> |
| <p>Fixed an issue preventing Kudu from starting when using Vormetric’s encrypted filesystem |
| (secfs2) on ext4 (see <a href="https://issues.apache.org/jira/browse/KUDU-2406">KUDU-2406</a>).</p> |
| </li> |
| <li> |
| <p>Fixed an issue where Kudu’s block cache memory tracking (as seen on the <code>/mem-trackers</code> |
| web UI page) wasn’t accounting for all of the overhead of the cache itself (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-972">KUDU-972</a>).</p> |
| </li> |
| <li> |
| <p>Fixed an issue where the C++ client would fail to reopen an expired scanner; instead, |
| the client would retry in a tight loop and eventually timeout (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2414">KUDU-2414</a>).</p> |
| </li> |
| <li> |
| <p>When a tablet is deleted, its write-ahead log recovery directory is also deleted, if it |
| exists (see <a href="https://issues.apache.org/jira/browse/KUDU-1038">KUDU-1038</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a tablet server crash when a tablet is scanned with two predicates on its primary |
| key and the predicates do not overlap (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2447">KUDU-2447</a>).</p> |
| </li> |
| <li> |
| <p>Fixed an issue where the Kudu MapReduce connector’s <code>KuduTableInputFormat</code> may exhaust |
| its scan too early (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2525">KUDU-2525</a>).</p> |
| </li> |
| <li> |
| <p>Fixed an issue with failed tablet copies that would cause subsequent tablet copies to |
| crash the tablet server (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2293">KUDU-2293</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug in which incorrect results would be returned in scans following a |
| server restart (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2463">KUDU-2463</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug causing a tablet server crash when a write batch request from a client |
| failed coarse-grained authorization (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2540">KUDU-2540</a>).</p> |
| </li> |
| <li> |
| <p>Fixed use-after-free in case of WAL replay error (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2509">KUDU-2509</a>).</p> |
| </li> |
| <li> |
| <p>Fixed authentication token reacquisition in the C++ client (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2580">KUDU-2580</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug where leader logged excessively when the followers fell behind (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2322">KUDU-2322</a>).</p> |
| </li> |
| <li> |
| <p>Fixed reporting of leader health during lifecycle transitions (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2335">KUDU-2335</a>).</p> |
| </li> |
| <li> |
| <p>Fixed moving single-replica tablets (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2443">KUDU-2443</a>).</p> |
| </li> |
| <li> |
| <p>Fixed an error that would cause the kudu CLI tool to unexpectedly exit when the |
| connection to the master or tserver was abruptly closed.</p> |
| </li> |
| <li> |
| <p>Fixed a rare issue where system failure could leave unexpected null bytes at the end of |
| metadata files, causing Kudu to be unable to restart (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-2260">KUDU-2260</a>).</p> |
| </li> |
| <li> |
| <p>Fixed an issue where <code>kudu cluster ksck</code> running a snapshot checksum scan would use a |
| single snapshot timestamp for all tablets. This caused the checksum process to fail if |
| the checksum process took a long time and the number of tablets was sufficiently large. |
| The tool should now be able to checksum tables even if the process takes many hours. |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-2179">KUDU-2179</a>).</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_wire_compatibility"><a class="link" href="#rn_1.8.0_wire_compatibility">Wire Protocol compatibility</a></h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Kudu 1.8.0 is wire-compatible with previous versions of Kudu:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Kudu 1.8 clients may connect to servers running Kudu 1.0 or later. If the client uses |
| features that are not available on the target server, an error will be returned.</p> |
| </li> |
| <li> |
| <p>Kudu 1.0 clients may connect to servers running Kudu 1.8 with the exception of the |
| below-mentioned restrictions regarding secure clusters.</p> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p>The authentication features introduced in Kudu 1.3 place the following limitations on wire |
| compatibility between Kudu 1.8 and versions earlier than 1.3:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>If a Kudu 1.8 cluster is configured with authentication or encryption set to "required", |
| clients older than Kudu 1.3 will be unable to connect.</p> |
| </li> |
| <li> |
| <p>If a Kudu 1.8 cluster is configured with authentication and encryption set to "optional" |
| or "disabled", older clients will still be able to connect.</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_incompatible_changes"><a class="link" href="#rn_1.8.0_incompatible_changes">Incompatible Changes in Kudu 1.8.0</a></h2> |
| <div class="sectionbody"> |
| <div class="sect2"> |
| <h3 id="rn_1.8.0_client_compatibility"><a class="link" href="#rn_1.8.0_client_compatibility">Client Library Compatibility</a></h3> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>The Kudu 1.8 Java client library is API- and ABI-compatible with Kudu 1.7. Applications |
| written against Kudu 1.7 will compile and run against the Kudu 1.8 client library and |
| vice-versa.</p> |
| </li> |
| <li> |
| <p>The Kudu 1.8 C++ client is API- and ABI-forward-compatible with Kudu 1.7. |
| Applications written and compiled against the Kudu 1.7 client library will run without |
| modification against the Kudu 1.8 client library. Applications written and compiled |
| against the Kudu 1.8 client library will run without modification against the Kudu 1.7 |
| client library.</p> |
| </li> |
| <li> |
| <p>The Kudu 1.8 Python client is API-compatible with Kudu 1.7. Applications written against |
| Kudu 1.7 will continue to run against the Kudu 1.8 client and vice-versa.</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_known_issues"><a class="link" href="#rn_1.8.0_known_issues">Known Issues and Limitations</a></h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Please refer to the <a href="known_issues.html">Known Issues and Limitations</a> section of the |
| documentation.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.8.0_contributors"><a class="link" href="#rn_1.8.0_contributors">Contributors</a></h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Kudu 1.8 includes contributions from 40 people, including 15 first-time contributors:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Anupama Gupta</p> |
| </li> |
| <li> |
| <p>Attila Piros</p> |
| </li> |
| <li> |
| <p>Brian McDevitt</p> |
| </li> |
| <li> |
| <p>Fengling Wang</p> |
| </li> |
| <li> |
| <p>Ferenc Szabó</p> |
| </li> |
| <li> |
| <p>Greg Solovyev</p> |
| </li> |
| <li> |
| <p>Kiyoshi Mizumaru</p> |
| </li> |
| <li> |
| <p>Shriya Gupta</p> |
| </li> |
| <li> |
| <p>Thomas Tauber-Marshall</p> |
| </li> |
| <li> |
| <p>Tigerquoll</p> |
| </li> |
| <li> |
| <p>Yao Xu</p> |
| </li> |
| <li> |
| <p>ZhangYao</p> |
| </li> |
| <li> |
| <p>helifu</p> |
| </li> |
| <li> |
| <p>jinxing64</p> |
| </li> |
| <li> |
| <p>qqchang2nd</p> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p>Thank you for helping to make Kudu even better!</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="resources_and_next_steps"><a class="link" href="#resources_and_next_steps">Resources</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p><a href="http://kudu.apache.org">Kudu Website</a></p> |
| </li> |
| <li> |
| <p><a href="http://github.com/apache/kudu">Kudu GitHub Repository</a></p> |
| </li> |
| <li> |
| <p><a href="index.html">Kudu Documentation</a></p> |
| </li> |
| <li> |
| <p><a href="prior_release_notes.html">Release notes for older releases</a></p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_installation_options"><a class="link" href="#_installation_options">Installation Options</a></h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>For full installation details, see <a href="installation.html">Kudu Installation</a>.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_next_steps"><a class="link" href="#_next_steps">Next Steps</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p><a href="quickstart.html">Kudu Quickstart</a></p> |
| </li> |
| <li> |
| <p><a href="installation.html">Installing Kudu</a></p> |
| </li> |
| <li> |
| <p><a href="configuration.html">Configuring Kudu</a></p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="col-md-3"> |
| |
| <div id="toc" data-spy="affix" data-offset-top="70"> |
| <ul> |
| |
| <li> |
| |
| <a href="index.html">Introducing Kudu</a> |
| </li> |
| <li> |
| <span class="active-toc">Kudu Release Notes</span> |
| <ul class="sectlevel1"> |
| <li><a href="#rn_1.8.0_upgrade_notes">Upgrade Notes</a></li> |
| <li><a href="#rn_1.8.0_obsoletions">Obsoletions</a></li> |
| <li><a href="#rn_1.8.0_deprecations">Deprecations</a></li> |
| <li><a href="#rn_1.8.0_new_features">New features</a></li> |
| <li><a href="#rn_1.8.0_improvements">Optimizations and improvements</a></li> |
| <li><a href="#rn_1.8.0_fixed_issues">Fixed Issues</a></li> |
| <li><a href="#rn_1.8.0_wire_compatibility">Wire Protocol compatibility</a></li> |
| <li><a href="#rn_1.8.0_incompatible_changes">Incompatible Changes in Kudu 1.8.0</a> |
| <ul class="sectlevel2"> |
| <li><a href="#rn_1.8.0_client_compatibility">Client Library Compatibility</a></li> |
| </ul> |
| </li> |
| <li><a href="#rn_1.8.0_known_issues">Known Issues and Limitations</a></li> |
| <li><a href="#rn_1.8.0_contributors">Contributors</a></li> |
| <li><a href="#resources_and_next_steps">Resources</a></li> |
| <li><a href="#_installation_options">Installation Options</a></li> |
| <li><a href="#_next_steps">Next Steps</a></li> |
| </ul> |
| </li> |
| <li> |
| |
| <a href="quickstart.html">Getting Started with Kudu</a> |
| </li> |
| <li> |
| |
| <a href="installation.html">Installation Guide</a> |
| </li> |
| <li> |
| |
| <a href="configuration.html">Configuring Kudu</a> |
| </li> |
| <li> |
| |
| <a href="kudu_impala_integration.html">Using Impala with Kudu</a> |
| </li> |
| <li> |
| |
| <a href="administration.html">Administering Kudu</a> |
| </li> |
| <li> |
| |
| <a href="troubleshooting.html">Troubleshooting Kudu</a> |
| </li> |
| <li> |
| |
| <a href="developing.html">Developing Applications with Kudu</a> |
| </li> |
| <li> |
| |
| <a href="schema_design.html">Kudu Schema Design</a> |
| </li> |
| <li> |
| |
| <a href="scaling_guide.html">Kudu Scaling Guide</a> |
| </li> |
| <li> |
| |
| <a href="security.html">Kudu Security</a> |
| </li> |
| <li> |
| |
| <a href="transaction_semantics.html">Kudu Transaction Semantics</a> |
| </li> |
| <li> |
| |
| <a href="background_tasks.html">Background Maintenance Tasks</a> |
| </li> |
| <li> |
| |
| <a href="configuration_reference.html">Kudu Configuration Reference</a> |
| </li> |
| <li> |
| |
| <a href="command_line_tools_reference.html">Kudu Command Line Tools Reference</a> |
| </li> |
| <li> |
| |
| <a href="known_issues.html">Known Issues and Limitations</a> |
| </li> |
| <li> |
| |
| <a href="contributing.html">Contributing to Kudu</a> |
| </li> |
| <li> |
| |
| <a href="export_control.html">Export Control Notice</a> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </div> |
| <footer class="footer"> |
| <div class="row"> |
| <div class="col-md-9"> |
| <p class="small"> |
| Copyright © 2020 The Apache Software Foundation. Last updated 2018-10-24 21:49:14 CEST |
| </p> |
| <p class="small"> |
| Apache Kudu, Kudu, Apache, the Apache feather logo, and the Apache Kudu |
| project logo are either registered trademarks or trademarks of The |
| Apache Software Foundation in the United States and other countries. |
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