Examples of org.elasticsearch.index.merge.policy.ElasticsearchMergePolicy

Package org.elasticsearch.index.merge.policy

Examples of org.elasticsearch.index.merge.policy.ElasticsearchMergePolicy

org.elasticsearch.index.merge.policy.ElasticsearchMergePolicy
A {@link MergePolicy} that upgrades segments and can upgrade merges.
It can be useful to use the background merging process to upgrade segments, for example when we perform internal changes that imply different index options or when a user modifies his mapping in non-breaking ways: we could imagine using this merge policy to be able to add doc values to fields after the fact or on the opposite to remove them.
For now, this {@link MergePolicy} takes care of moving versions that used tobe stored as payloads to numeric doc values.

    }


    @Test
    public void testMergingOldIndices() throws Exception {
        final IndexWriterConfig iwConf = new IndexWriterConfig(new KeywordAnalyzer());
        iwConf.setMergePolicy(new ElasticsearchMergePolicy(iwConf.getMergePolicy()));
        final Directory dir = newDirectory();
        final IndexWriter iw = new IndexWriter(dir, iwConf);


        // 1st segment, no _version
        Document document = new Document();

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            config.setInfoStream(new LoggerInfoStream(indexSettings, shardId));
            config.setMergeScheduler(mergeScheduler.newMergeScheduler());
            MergePolicy mergePolicy = mergePolicyProvider.getMergePolicy();
            // Give us the opportunity to upgrade old segments while performing
            // background merges
            mergePolicy = new ElasticsearchMergePolicy(mergePolicy);
            config.setMergePolicy(mergePolicy);
            config.setSimilarity(similarityService.similarity());
            config.setRAMBufferSizeMB(indexingBufferSize.mbFrac());
            config.setMaxThreadStates(indexConcurrency);
            config.setCodec(codecService.codec(codecName));

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