Elasticsearch Release Notes

Elasticsearch 7.10.2

**Table 1** Elasticsearch 7.10.2
Image Version	Description
7.10.2_25.6.0_0814	New features and performance enhancements: Added the elasticsearch-analysis-vietnamese plugin. Removed sensitive information from ClusterState for Elasticsearch clusters. Optimized the deduplication function for HPACK graph indexes. Enhanced ISM reliability concerning the circuit breaker mechanism. Resolved the following issue: lifecycle management tasks cannot be executed once the disk space usage exceeds 95%. Resolved the following issue: the backup and restoration plugin occasionally fails to create a repository. Resolved the following issue: admin permissions are lost after the built-in role mapping is modified. Resolved the following issue: indexes that are in the index recycle bin are not automatically deleted upon expiration. Resolved the following issue: the index monitoring plugin sometimes cannot obtain the index status. Optimized security mode switching for existing clusters. Resolved the following issue: the security mode fails to be changed when the cluster has a large number of index shards. Added the online web search function for the pg_search plugin, which supports OpenAI's embedding and reranking APIs. Resolved the following issue: IP addresses that are already blacklisted can still send requests.
7.10.2_25.3.0_0507	New features and performance enhancements: Removed some residual settings for plugins when restoring indexes. Fixed the following issue: The SQL plugin may cause some nodes to restart. Fixed the following issue: The breaker of a security-mode cluster is inconsistent with the Elasticsearch design. Optimized node lockout mechanism: To prevent specific nodes from being locked due to repeated incorrect password attempts, add their IP addresses to a whitelist. Fixed the following issue: Occasionally, the file descriptor remains allocated after a Kibana log file is deleted. Optimized compatibility with clients of versions 7.x and 8.x. Added support for a custom QueryPhase plugin. Vector indexes support parallel searches across segments. Added write failure monitoring. Fixed the following issue: The lifecycle plugin may cause upgrade failures. Fixed the following issue: The error "topDocs already consumed" may occur when sorting is performed. Optimized the error message displayed when decoupled storage and compute (index freezing) is used for a non-existent index. Fixed the following issue: The IK dictionary file may not take effect on new nodes upon an upgrade or scale-out operation. Fixed the following issue: Kibana cannot deliver password change requests due to an incorrect UI string (Chinese). Supports a retry mechanism for OBS access by the hpack vector plugin. Fixed the following issue: A 6.x security-mode cluster may fail to be upgraded to 7.10.2. Fixed the following issue: Elasticsearch processes may fail to restart with the error "alias has more than one write index." Kibana basePathAlias can contain -_.
7.10.2_25.1.0_0227	New features and performance enhancements: Added a node alarm to indicate abnormality of the filesystem tune2fs. Fixed the following issue: File handles may fail to be released promptly during log ingestion. Vector search supports indexing algorithms GRAPH_SQ4 and GRAPH_SQ8. The index lifecycle plugin supports skipping the rollover step. Fixed the following issue for the storage-compute decoupling plugin: An incompatibility issue may occur during upgrade due to obs_index_allocator. Fixed the following issue: Process restart may occur when a _msearch query is canceled.

Elasticsearch 7.6.2

**Table 2** Elasticsearch 7.6.2
Image Version	Description
7.6.2_25.6.0_0814	New features and performance enhancements: Removed sensitive information from ClusterState for Elasticsearch clusters. Resolved the following issue: the backup and restoration plugin occasionally fails to create a repository. Resolved the following issue: admin permissions are lost after the built-in role mapping is modified. Resolved the following issue: IP addresses that are already blacklisted can still send requests. Resolved the following issue: the index monitoring plugin sometimes cannot obtain the index status. Enhanced ISM reliability concerning the circuit breaker mechanism.
7.6.2_25.3.0_0506	New features and performance enhancements: Removed some residual settings for plugins when restoring indexes. Fixed the following issue: The SQL plugin may cause some nodes to restart. Fixed the following issue: The breaker of a security-mode cluster is inconsistent with the Elasticsearch design. Added write failure monitoring. Fixed the following issue: The IK dictionary file may not take effect on new nodes upon an upgrade or scale-out operation. Fixed the following issue: Snapshot operations may get stuck when a circuit breaker is triggered. Fixed the following issue: Shards may fail to be allocated when read/write splitting is enabled.
7.6.2_25.1.0_0227	New features and performance enhancements: Added a node alarm to indicate abnormality of the filesystem tune2fs. The index lifecycle plugin supports skipping the rollover step. Fixed the following issue: If an index name contains minutes, the rollover alias may fail to be updated. Fixed the following issue for the storage-compute decoupling plugin: An incompatibility issue may occur during upgrade due to obs_index_allocator. Fixed the following issue: Process restart may occur when a _msearch query is canceled.