| --- |
| title: Apache Kudu 1.18.0 Release Notes |
| layout: default |
| active_nav: docs |
| last_updated: 'Last updated 2025-06-24 18:00:24 -0700' |
| --- |
| <!-- |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| --> |
| |
| |
| <div class="container"> |
| <div class="row"> |
| <div class="col-md-9"> |
| |
| <h1>Apache Kudu 1.18.0 Release Notes</h1> |
| <div class="sect1"> |
| <h2 id="rn_1.18.0_upgrade_notes"><a class="link" href="#rn_1.18.0_upgrade_notes">Upgrade Notes</a></h2> |
| <div class="sectionbody"> |
| |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.18.0_obsoletions"><a class="link" href="#rn_1.18.0_obsoletions">Obsoletions</a></h2> |
| <div class="sectionbody"> |
| |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.18.0_deprecations"><a class="link" href="#rn_1.18.0_deprecations">Deprecations</a></h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Support for Python versions 3.0 to 3.5 (inclusive) has been discontinued.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.18.0_new_features"><a class="link" href="#rn_1.18.0_new_features">New features</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Kudu now supports a new experimental cache eviction policy named Segmented LRU (SLRU). This |
| eviction policy helps the block cache better resist large scans that would otherwise evict |
| frequently accessed data. |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-613">KUDU-613</a>).</p> |
| </li> |
| <li> |
| <p>A new experimental feature has been introduced to store LBM metadata in embedded RocksDB (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-3371">KUDU-3371</a>).</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.18.0_improvements"><a class="link" href="#rn_1.18.0_improvements">Optimizations and improvements</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Several minor improvements to the performance of Kudu masters and tablet servers.</p> |
| </li> |
| <li> |
| <p>The internal server-side counter for the <code>Auto-Incrementing</code> column is now updated during the |
| server’s bootstrap process (see <a href="https://issues.apache.org/jira/browse/KUDU-1945">KUDU-1945</a>).</p> |
| </li> |
| <li> |
| <p>Tables with <code>Auto-Incrementing</code> column can now be backed up and restored |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-1945">KUDU-1945</a>).</p> |
| </li> |
| <li> |
| <p>Added /ipki-ca-cert, /ipki-ca-cert-pem, and /ipki-ca-cert-der endpoints for the embedded |
| webserver of Kudu master to fetch the IPKI CA certificate used by a Kudu cluster.</p> |
| </li> |
| <li> |
| <p>Added client API to import JWT for client authentication (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-3472">KUDU-3472</a>).</p> |
| </li> |
| <li> |
| <p>Added logic to detect unexpected jumps in the local/wall clock. This is enabled by default when |
| running at Azure VM instances which are known to be prone to such events. Otherwise, this |
| logic is disabled. For details, refer to the online documentation for --wall_clock_jump_detection |
| and --wall_clock_jump_threshold_sec flags.</p> |
| </li> |
| <li> |
| <p>Kudu can now be built with the default system gcc/g++-7 compiler on SLES15.</p> |
| </li> |
| <li> |
| <p>Kudu can now be built on macOS 14.x (Sonoma) with XCode 15 and newer.</p> |
| </li> |
| <li> |
| <p>Added validator for the --trusted_certificate_file flag to catch misconfigurations |
| (such as pointing to a non-existing file) early (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-3392">KUDU-3392</a>).</p> |
| </li> |
| <li> |
| <p>Added a new metric to track per-RPC timeouts. This helps in identifying if requests to a |
| particular RPC method timed out while being processed (see |
| <a href="https://issues.apache.org/jira/browse/KUDU-3514">KUDU-3514</a>).</p> |
| </li> |
| <li> |
| <p>Added a new metric for AcceptorPool’s dispatch timing. See the online documentation for the |
| acceptor_dispatch_times metric.</p> |
| </li> |
| <li> |
| <p>Unified logging on write requests rejected by tablet servers. This helps in troubleshooting |
| and post-mortem analysis.</p> |
| </li> |
| <li> |
| <p>Increased the backlog of listened RPC sockets up to 512. This helps in a very busy Kudu cluster |
| when many clients attempt to connect to the cluster concurrently.</p> |
| </li> |
| <li> |
| <p>Added Cache-Control, X-Content-Type-Options, and HSTS HTTP headers into Kudu embedded webserver’s |
| responses. For details, see the online documentation for --webserver_hsts_max_age_seconds and |
| --webserver_hsts_include_sub_domains flags.</p> |
| </li> |
| <li> |
| <p>Introduced rpc_listened_socket_rx_queue_size and rpc_pending_connections metrics for Kudu master |
| and tablet servers. For details, see the online documentation for the newly introduced metrics.</p> |
| </li> |
| <li> |
| <p>Updated the severity level of a few tablet-level metrics to bring them on-par with the rest of |
| metrics having similar semantics. See |
| <a href="https://github.com/apache/kudu/commit/35716499d">changelist 35716499d</a> for details.</p> |
| </li> |
| <li> |
| <p>Removed unnecessary memory allocation for ancient UNDO mutations. See |
| <a href="https://github.com/apache/kudu/commit/3bdaf50b5">changelist 3bdaf50b5</a> for details.</p> |
| </li> |
| <li> |
| <p>Apache Ranger client now accepts JVM arguments via --ranger_java_extra_args and a colon-separated |
| list of classpaths via --ranger_jar_path |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3503">KUDU-3503</a> |
| and <a href="https://issues.apache.org/jira/browse/KUDU-3359">KUDU-3359</a>).</p> |
| </li> |
| <li> |
| <p>Key materials for over-the-wire encryption can now be encrypted on disk without data-at-rest |
| encryption or file-system level encryption using --tsk_private_key_password_cmd and |
| --ipki_private_key_password_cmd (see <a href="https://issues.apache.org/jira/browse/KUDU-3448">KUDU-3448</a>).</p> |
| </li> |
| <li> |
| <p>Maintenance operations other than DRS or MRS flush could be scheduled now even if the server is |
| under memory pressure. Set run_non_memory_ops_prob to a value greater than 0 to enable it |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3407">KUDU-3407</a>).</p> |
| </li> |
| <li> |
| <p>Introduced new metrics for slow scans in tablet servers.</p> |
| </li> |
| <li> |
| <p>Buffer space limit in the Kudu Java client (KuduSession) is now configurable.</p> |
| </li> |
| <li> |
| <p>Compaction for soft-deleted tables is now disabled by default.</p> |
| </li> |
| <li> |
| <p>Several metrics have been introduced to track operations such as table creation, table deletion, |
| alter table schema, tablet scans, tablet copy, tablet replica election, and tablet replication.</p> |
| </li> |
| <li> |
| <p>Enhanced the robustness of key retrieval from Ranger.</p> |
| </li> |
| <li> |
| <p>Kudu now runs on AArch64 Ubuntu and RedHat.</p> |
| </li> |
| <li> |
| <p>Installation of the Kudu Python package has been simplified, removing the need for a manual Cython |
| installation; compatible versions are now automatically handled. Dependencies have been updated to |
| support Python 2.7 and 3.6-3.10, and test files are now excluded from the final package.</p> |
| </li> |
| <li> |
| <p>Per-session write operation metrics have been added to the Kudu Python client.</p> |
| </li> |
| <li> |
| <p>Support for UPSERT IGNORE has been added to the Kudu Python client |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3353">KUDU-3353</a>).</p> |
| </li> |
| <li> |
| <p>The Kudu C++ and Python client examples have been added to demonstrate the utilization of the |
| non-unique primary key feature.</p> |
| </li> |
| <li> |
| <p>Support for soft table deletion has been added to the Kudu Python client |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3326">KUDU-3326</a>).</p> |
| </li> |
| <li> |
| <p>Support for adding comments in ColumnSchema has been added to the Kudu Python client.</p> |
| </li> |
| <li> |
| <p>Support for immutable columns has been added to the Kudu Python client.</p> |
| </li> |
| <li> |
| <p>Kudu now supports dedicated SPNEGO keytab |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3496">KUDU-3496</a>).</p> |
| </li> |
| <li> |
| <p>Kudu now supports creating under-replicated tables (when the number of requested replicas is |
| greater than the number of tablet servers) as long as consensus can be achieved |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3452">KUDU-3452</a>).</p> |
| </li> |
| <li> |
| <p>Tablet copying speed can now be limited |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3447">KUDU-3447</a>).</p> |
| </li> |
| <li> |
| <p>The maximum size of RPC messages is now configurable via the Kudu C++ client |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3595">KUDU-3595</a>).</p> |
| </li> |
| <li> |
| <p>Tablet-level metrics are now available in Prometheus format as well. Previously, only |
| server-level Kudu metrics were available in Prometheus format |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3563">KUDU-3563</a>).</p> |
| </li> |
| <li> |
| <p>Range aware cluster rebalancer can now be run for multiple tables and against the whole Kudu |
| cluster.</p> |
| </li> |
| <li> |
| <p>The example Kudu C++ client application now works with HMS-enabled Kudu clusters.</p> |
| </li> |
| <li> |
| <p>Addressed several CVE’s from thirdparty dependencies by upgrading them |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3626">KUDU-3626</a>, |
| <a href="https://issues.apache.org/jira/browse/KUDU-3629">KUDU-3629</a>)</p> |
| </li> |
| <li> |
| <p>Upgraded Gradle to version 7.6.4 |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3551">KUDU-3551</a>).</p> |
| </li> |
| <li> |
| <p>Kudu now uses x509_get_signature_info() (OpenSSL 1.1.1+) to correctly detect hash algorithms |
| for RSASSA-PSS certificate signatures, fixing a limitation in the previous approach. |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3663">KUDU-3663</a>).</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.18.0_fixed_issues"><a class="link" href="#rn_1.18.0_fixed_issues">Fixed issues</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Fixed issue where UPDATE privilege granted by Ranger is not honored by Kudu. |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3661">KUDU-3661</a>).</p> |
| </li> |
| <li> |
| <p>Fixed scan issues where an unexpected predicate was introduced |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3518">KUDU-3518</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug in the range-aware replica placement code where the master would crash |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3532">KUDU-3532</a>).</p> |
| </li> |
| <li> |
| <p>The ‘kudu table copy’ CLI tool now exits gracefully and prints information on errors instead |
| of crashing when encountering errors while writing data to the destination table.</p> |
| </li> |
| <li> |
| <p>Fixed handling of oversized messages exchanged between kudu-master process and Ranger client. |
| This fixes fine-grained authorization issues when working with a cluster having thousands of |
| tables (see <a href="https://issues.apache.org/jira/browse/KUDU-3450">KUDU-3450</a> and |
| <a href="https://issues.apache.org/jira/browse/KUDU-3489">KUDU-3489</a>).</p> |
| </li> |
| <li> |
| <p>Fixed at-rest encryption/decryption when using OpenSSL 3.</p> |
| </li> |
| <li> |
| <p>Fixed incompatibility introduced with <a href="https://issues.apache.org/jira/browse/KUDU-2671">KUDU-2671</a> |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3515">KUDU-3515</a>).</p> |
| </li> |
| <li> |
| <p>Fixed master and tablet server crash when the system clock is synchronized by PTPd |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3521">KUDU-3521</a>).</p> |
| </li> |
| <li> |
| <p>Fixed NPE that might be thrown during RPC connection negotiation by Kudu Java client. The |
| thrown exception would make the connection to the corresponding tablet server unusable, where |
| the only remedy for the issue was a restart of the Kudu Java client application |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3576">KUDU-3576</a>).</p> |
| </li> |
| <li> |
| <p>Do not expose string gauges as Prometheus metrics |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3549">KUDU-3549</a>).</p> |
| </li> |
| <li> |
| <p>Fixed integer overflow in available space metrics |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3562">KUDU-3562</a>).</p> |
| </li> |
| <li> |
| <p>Don’t spam servers’ logs with “Entity is not relevant to Prometheus” |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3561">KUDU-3561</a>).</p> |
| </li> |
| <li> |
| <p>Fixed summary metrics in Prometheus format |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3566">KUDU-3566</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a race condition that might lead to unexpected behavior when processing AlterTable or a scan |
| request containing IN-list predicates with concurrently running major delta compaction |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3569">KUDU-3569</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a heap-use-after-free bug in MajorDeltaCompactionOp. The bug might lead to unexpected |
| behavior when processing an AlterTable request along with concurrently running major delta |
| compaction (see <a href="https://issues.apache.org/jira/browse/KUDU-3570">KUDU-3570</a>).</p> |
| </li> |
| <li> |
| <p>Fixed altering tables with custom per-range hash schemas |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3577">KUDU-3577</a>).</p> |
| </li> |
| <li> |
| <p>Disable <a href="https://issues.apache.org/jira/browse/KUDU-3367">KUDU-3367</a> behavior by default. This fixes |
| major delta compaction failure that manifests itself in certain workloads with copious number of |
| DELETE operations (see <a href="https://issues.apache.org/jira/browse/KUDU-3619">KUDU-3619</a>).</p> |
| </li> |
| <li> |
| <p>Fixed Impala daemon crash caused due to improper handling of a no-longer-existing tablet |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3461">KUDU-3461</a>).</p> |
| </li> |
| <li> |
| <p>The Kudu CLI’s can now accommodate response payloads up to 2GByte in size with the increased |
| maximum RPC message size limit.</p> |
| </li> |
| <li> |
| <p>Fixed incorrect memory budgeting condition in compaction that could cause budgeting logic |
| to not kick in when required.</p> |
| </li> |
| <li> |
| <p>Fixed Ranger client issue to avoid spawning of Ranger subprocess if keytab file is not available |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3558">KUDU-3558</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug where the Ranger client could silently crash leaving the Kudu masters running, but not |
| being able to serve requests (see <a href="https://issues.apache.org/jira/browse/KUDU-3504">KUDU-3504</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug that the table could stay in ALTERING state forever if its replication factor changes |
| when it does not have any tablets.</p> |
| </li> |
| <li> |
| <p>Fixed a bug in Kudu Java client that might lead to a Scanner not found exception |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3526">KUDU-3526</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug where the result of UPSERT might not be correct when the client schema and server schema |
| do not match (see <a href="https://issues.apache.org/jira/browse/KUDU-3495">KUDU-3495</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug where the log cache of the tombstoned tablet might not be cleared |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3535">KUDU-3535</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug where the maintenance manager might schedule fewer operations even if there are idle |
| threads and pending operations. |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3516">KUDU-3516</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug when a new master with empty local directories tries to connect to an existing cluster |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3437">KUDU-3437</a>).</p> |
| </li> |
| <li> |
| <p>Fixed a bug in multi-master cluster with non-default Kerberos principal name.</p> |
| </li> |
| <li> |
| <p>Fixed a bug in multi-master cluster when MiniDumps enabled |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3491">KUDU-3491</a>).</p> |
| </li> |
| <li> |
| <p>Content-Type headers have been corrected for various HTTP/HTTPS endpoints, ensuring accurate |
| response formats, including support for JSON and binary data where applicable |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3543">KUDU-3543</a>).</p> |
| </li> |
| <li> |
| <p>SSE2 and AVX code now uses native NEON instructions on ARM64/AArch64 |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3475">KUDU-3475</a>).</p> |
| </li> |
| <li> |
| <p>Fixed IN list predicate pruning for tables with range specific hash schema |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3564">KUDU-3564</a>).</p> |
| </li> |
| <li> |
| <p>Kudu Java client now properly handles concurrent table schema updates between consecutive write |
| operations within the same KuduSession |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3483">KUDU-3483</a>).</p> |
| </li> |
| <li> |
| <p>Fixed heap-use-after-free issue in OpDriver |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3620">KUDU-3620</a>).</p> |
| </li> |
| <li> |
| <p>Fixed handling of unexpected input for --predicates flag in <code>kudu table scan</code> and other CLI tools, |
| so the tools wouldn’t crash on incorrect user input, but report on problems with actionable error |
| messages. For details, see <a href="https://issues.apache.org/jira/browse/KUDU-3623">KUDU-3623</a>.</p> |
| </li> |
| <li> |
| <p>Fixed zlib-related errors when processing HMS notification events |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3648">KUDU-3648</a>.</p> |
| </li> |
| <li> |
| <p>Fixed the issue where DnsResolver threads were not shutdown causing retrying of RPCs that failed |
| due to server shutdown process |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3633">KUDU-3633</a>).</p> |
| </li> |
| <li> |
| <p>Fixed crash of Kudu CLI tool namely kudu table copy in cases of invalid inputs |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3623">KUDU-3623</a>).</p> |
| <div id="rn_1.18.0_wire_compatibility" class="paragraph"> |
| <p>== Wire Protocol compatibility</p> |
| </div> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p>Kudu 1.18.0 is wire-compatible with previous versions of Kudu:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Kudu 1.18 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>Rolling upgrade between Kudu 1.17 and Kudu 1.18 servers is believed to be possible |
| though has not been sufficiently tested. Users are encouraged to shut down all nodes |
| in the cluster, upgrade the software, and then restart the daemons on the new version.</p> |
| </li> |
| <li> |
| <p>Kudu 1.0 clients may connect to servers running Kudu 1.18 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 1.18 and versions earlier than 1.3:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>If a Kudu 1.18 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 1.18 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_1.18.0_incompatible_changes"><a class="link" href="#rn_1.18.0_incompatible_changes">Incompatible Changes in Kudu 1.18.0</a></h2> |
| <div class="sectionbody"> |
| <div class="sect2"> |
| <h3 id="rn_1.18.0_client_compatibility"><a class="link" href="#rn_1.18.0_client_compatibility">Client Library Compatibility</a></h3> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>The Kudu 1.18 Java client library is API- and ABI-compatible with Kudu 1.17. Applications |
| written against Kudu 1.17 will compile and run against the Kudu 1.18 client library and |
| vice-versa. |
| NOTE: As part of the Gradle upgrade to version 7.6.4, additional runtime dependencies have |
| been introduced in the published artifacts. These dependencies were optional in earlier versions |
| and, therefore, were not included in the corresponding POM files of those artifacts.</p> |
| </li> |
| <li> |
| <p>The Kudu 1.18 C++ client is API- and ABI-forward-compatible with Kudu 1.17. |
| Applications written and compiled against the Kudu 1.17 client library will run without |
| modification against the Kudu 1.18 client library. Applications written and compiled |
| against the Kudu 1.18 client library will run without modification against the Kudu 1.17 |
| client library.</p> |
| </li> |
| <li> |
| <p>The Kudu 1.18 Python client is API-compatible with Kudu 1.17, as no breaking changes have |
| been introduced. However, support for Python versions 3.0 through 3.5 (inclusive) has been |
| dropped. Users on these versions should upgrade to a supported Python version. Applications |
| written against Kudu 1.17 will continue to work with the Kudu 1.18 client, and vice versa, as |
| long as a supported Python version is used.</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="rn_1.18.0_known_issues"><a class="link" href="#rn_1.18.0_known_issues">Known Issues and Limitations</a></h2> |
| <div class="sectionbody"> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>The Kudu CLI tool sometimes crashes on exit with SIGSEGV in OPENSSL_cleanup |
| (see <a href="https://issues.apache.org/jira/browse/KUDU-3635">KUDU-3635</a>).</p> |
| </li> |
| </ul> |
| </div> |
| <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_1.18.0_contributors"><a class="link" href="#rn_1.18.0_contributors">Contributors</a></h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Kudu 1.18.0 includes contributions from 26 people, including 3 first-time contributors:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>halim.kim</p> |
| </li> |
| <li> |
| <p>qhsong</p> |
| </li> |
| <li> |
| <p>Sebastian Pop</p> |
| </li> |
| <li> |
| <p>Vladyslav Lyutenko</p> |
| </li> |
| <li> |
| <p>0xderek</p> |
| </li> |
| </ul> |
| </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_1.18.0_upgrade_notes">Upgrade Notes</a></li> |
| <li><a href="#rn_1.18.0_obsoletions">Obsoletions</a></li> |
| <li><a href="#rn_1.18.0_deprecations">Deprecations</a></li> |
| <li><a href="#rn_1.18.0_new_features">New features</a></li> |
| <li><a href="#rn_1.18.0_improvements">Optimizations and improvements</a></li> |
| <li><a href="#rn_1.18.0_fixed_issues">Fixed issues</a></li> |
| <li><a href="#rn_1.18.0_incompatible_changes">Incompatible Changes in Kudu 1.18.0</a> |
| <ul class="sectlevel2"> |
| <li><a href="#rn_1.18.0_client_compatibility">Client Library Compatibility</a></li> |
| </ul> |
| </li> |
| <li><a href="#rn_1.18.0_known_issues">Known Issues and Limitations</a></li> |
| <li><a href="#rn_1.18.0_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">Quickstart Guide</a> |
| </li> |
| <li> |
| |
| <a href="installation.html">Installation Guide</a> |
| </li> |
| <li> |
| |
| <a href="configuration.html">Configuring Kudu</a> |
| </li> |
| <li> |
| |
| <a href="hive_metastore.html">Using the Hive Metastore with 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="metrics_reference.html">Kudu Metrics 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> |
