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[9.3] CCR follower index needs to copy transport version from CCR leader index (#145035) #145039

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elasticsearchmachine merged 1 commit into from
Mar 26, 2026
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[9.3] CCR follower index needs to copy transport version from CCR leader index (#145035) #145039

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5 changes: 5 additions & 0 deletions docs/changelog/145035.yaml
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@@ -0,0 +1,5 @@
area: CCR
issues: []
pr: 145035
summary: CCR follower index needs to copy transport version from CCR leader index
type: bug
1 change: 1 addition & 0 deletions .../plugin/ccr/src/internalClusterTest/java/org/elasticsearch/xpack/ccr/CcrRepositoryIT.java
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Expand Up @@ -200,6 +200,7 @@ public void testThatRepositoryRecoversEmptyIndexBasedOnLeaderSettings() throws I

// UUID is changed so that we can follow indexes on same cluster
assertNotEquals(leaderMetadata.getIndexUUID(), followerMetadata.getIndexUUID());
assertEquals(leaderMetadata.getTransportVersion(), followerMetadata.getTransportVersion());
}

public void testDocsAreRecovered() throws Exception {
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1 change: 1 addition & 0 deletions x-pack/plugin/ccr/src/main/java/org/elasticsearch/xpack/ccr/repository/CcrRepository.java
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Expand Up @@ -325,6 +325,7 @@ public IndexMetadata getSnapshotIndexMetaData(RepositoryData repositoryData, Sna
imdBuilder.putCustom(Ccr.CCR_CUSTOM_METADATA_KEY, customMetadata);

imdBuilder.settings(leaderIndexMetadata.getSettings());
imdBuilder.transportVersion(leaderIndexMetadata.getTransportVersion());

// Copy mappings from leader IMD to follow IMD
imdBuilder.putMapping(leaderIndexMetadata.mapping());
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