How To Solve Issues Related to Log – Now throttling indexing: numMergesInFlight=; maxNumMerges=

How To Solve Issues Related to Log – Now throttling indexing: numMergesInFlight=; maxNumMerges=

Updated: Jan-20

Elasticsearch Version: 1.7-8.0

Background

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To troubleshoot log “Now throttling indexing: numMergesInFlight=; maxNumMerges=” it’s important to understand a few problems related to Elasticsearch concepts index. See bellow important tips and explanations on these concepts

Log Context

Log”Now throttling indexing: numMergesInFlight={}; maxNumMerges={}” classname is InternalEngine.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         
Override
        public synchronized void beforeMerge(OnGoingMerge merge) {
            int maxNumMerges = mergeScheduler.getMaxMergeCount();
            if (numMergesInFlight.incrementAndGet() > maxNumMerges) {
                if (isThrottling.getAndSet(true) == false) {
                    logger.info("now throttling indexing: numMergesInFlight={}; maxNumMerges={}"; numMergesInFlight; maxNumMerges);
                    activateThrottling();
                }
            }
        }




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 How to prevent Elasticsearch from index throttling? 7.98 K 5

Figure out Indexing error in elasticsearch?   0.28 K 5

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