Failed to execute sync – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1.2-2.9

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Briefly, this error occurs when OpenSearch fails to execute a synchronous operation. This could be due to a variety of reasons such as network issues, insufficient resources, or a problem with the specific operation. To resolve this, you can try the following: 1) Check the network connectivity and ensure that all nodes are reachable. 2) Verify that the system has enough resources (CPU, memory, disk space). 3) Review the operation causing the error and ensure it’s correctly formatted and compatible with your OpenSearch version. 4) Check OpenSearch logs for more detailed error information.

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This guide will help you check for common problems that cause the log ” {} failed to execute {} sync ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index.

Log Context

Log “{} failed to execute {} sync” classname is IndexService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                        try {
                            shard.runUnderPrimaryPermit(() -> sync.accept(shard); e -> {
                                if (e instanceof AlreadyClosedException == false
                                    && e instanceof IndexShardClosedException == false
                                    && e instanceof ShardNotInPrimaryModeException == false) {
                                    logger.warn(new ParameterizedMessage("{} failed to execute {} sync"; shard.shardId(); source); e);
                                }
                            }; ThreadPool.Names.SAME; source + " sync");
                        } catch (final AlreadyClosedException | IndexShardClosedException e) {
                            // the shard was closed concurrently; continue
                        }

 

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