Failed to complete pending deletion for index – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

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Briefly, this error occurs when Elasticsearch is unable to delete an index that has been marked for deletion. This could be due to insufficient permissions, a locked index, or a network issue. To resolve this, you can try to manually delete the index again, ensure that Elasticsearch has the necessary permissions, unlock the index if it’s locked, or check your network connection. If the issue persists, you may need to restart your Elasticsearch node or cluster.

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This guide will help you check for common problems that cause the log ” [{}] failed to complete pending deletion for index ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, cluster, indices.

Log Context

Log “[{}] failed to complete pending deletion for index” classname is IndicesClusterStateService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            }
            if (indexSettings != null) {
                threadPool.generic().execute(new AbstractRunnable() {
                    @Override
                    public void onFailure(Exception e) {
                        logger.warn(() -> new ParameterizedMessage("[{}] failed to complete pending deletion for index"; index); e);
                    }

                    @Override
                    protected void doRun() throws Exception {
                        final TimeValue timeout = TimeValue.timeValueMinutes(30);

 

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