How To Solve Issues Related to Log – upgrading multi data dir to

How To Solve Issues Related to Log – upgrading multi data dir to

Updated: Feb-20

Elasticsearch Version: 1.7-8.0

Background

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To troubleshoot log “upgrading multi data dir to” it’s important to understand a few problems related to Elasticsearch concepts Index, Memory. See bellow important tips and explanations on these concepts

Log Context

Log”{} upgrading multi data dir to {}” classname is MultiDataPathUpgrader.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         final Path[] paths = nodeEnvironment.availableShardPaths(shard); // custom data path doesn't need upgrading
        if (isTargetPathConfigured(paths; targetPath) == false) {
            throw new IllegalArgumentException("shard path must be one of the shards data paths");
        }
        assert needsUpgrading(shard) : "Should not upgrade a path that needs no upgrading";
        logger.info("{} upgrading multi data dir to {}"; shard; targetPath.getDataPath());
        final ShardStateMetaData loaded = ShardStateMetaData.FORMAT.loadLatestState(logger; paths);
        if (loaded == null) {
            throw new IllegalStateException(shard + " no shard state found in any of: " + Arrays.toString(paths) + " please check and remove them if possible");
        }
        logger.info("{} loaded shard state {}"; shard; loaded);




Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 To Upgrade A Running Elasticsearch  

After Upgrading Logstash To 6 4 1 I  

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