private void applyDeletedIndices(final ClusterChangedEvent event) { final ClusterState previousState = event.previousState(); final String localNodeId = event.state().nodes().localNodeId(); assert localNodeId != null; for (IndexService indexService : indicesService) { IndexMetaData indexMetaData = event.state().metaData().index(indexService.index().name()); if (indexMetaData != null) { if (!indexMetaData.isSameUUID(indexService.indexUUID())) { logger.debug( "[{}] mismatch on index UUIDs between cluster state and local state, cleaning the index so it will be recreated", indexMetaData.index()); deleteIndex( indexMetaData.index(), "mismatch on index UUIDs between cluster state and local state, cleaning the index so it will be recreated"); } } } for (String index : event.indicesDeleted()) { if (logger.isDebugEnabled()) { logger.debug("[{}] cleaning index, no longer part of the metadata", index); } final Settings indexSettings; final IndexService idxService = indicesService.indexService(index); if (idxService != null) { indexSettings = idxService.getIndexSettings(); deleteIndex(index, "index no longer part of the metadata"); } else { final IndexMetaData metaData = previousState.metaData().index(index); assert metaData != null; indexSettings = metaData.settings(); indicesService.deleteClosedIndex( "closed index no longer part of the metadata", metaData, event.state()); } try { nodeIndexDeletedAction.nodeIndexDeleted(event.state(), index, indexSettings, localNodeId); } catch (Throwable e) { logger.debug("failed to send to master index {} deleted event", e, index); } } }