[9.0] System data streams are not being upgraded in the feature migration API #124884
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It seems the best way to fix elastic#122949 is to use existing data stream reindex API. However, this API is located in the migrate x-pack plugin. This commit moves the system indices migration logic (REST handlers, transport actions, and task) to the migrate plugin. Port of elastic#123551
This commit adds support for system data streams reindexing. The system data stream migration extends the existing system indices migration task and uses the data stream reindex API. The system index migration task starts a reindex data stream task and tracks its status every second. Only one system index or system data stream is migrated at a time. If a data stream migration fails, the entire system index migration task will also fail. Port of elastic#123926
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…igration_9.0 # Conflicts: # server/src/main/java/org/elasticsearch/indices/SystemIndices.java # x-pack/plugin/migrate/src/internalClusterTest/java/org/elasticsearch/system_indices/action/AbstractFeatureMigrationIntegTest.java # x-pack/plugin/migrate/src/internalClusterTest/java/org/elasticsearch/system_indices/action/FeatureMigrationIT.java # x-pack/plugin/migrate/src/main/java/org/elasticsearch/system_indices/task/SystemIndexMigrationExecutor.java # x-pack/plugin/migrate/src/main/java/org/elasticsearch/system_indices/task/SystemIndexMigrationInfo.java # x-pack/plugin/migrate/src/main/java/org/elasticsearch/system_indices/task/SystemIndexMigrator.java # x-pack/plugin/migrate/src/main/java/org/elasticsearch/xpack/migrate/MigratePlugin.java # x-pack/plugin/migrate/src/test/java/org/elasticsearch/system_indices/action/TransportGetFeatureUpgradeStatusActionTests.java
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This commit adds support for system data streams reindexing. The system data stream migration extends the existing system indices migration task and uses the data stream reindex API.
The system index migration task starts a reindex data stream task and tracks its status every second. Only one system index or system data stream is migrated at a time. If a data stream migration fails, the entire system index migration task will also fail.
Port of #123926