How To Solve Issues Related to Log – Failed to acquire searcher; source

How To Solve Issues Related to Log – Failed to acquire searcher; source

Updated: Jan-20

Elasticsearch Version: 1.7-8.0

Background

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To troubleshoot log “Failed to acquire searcher; source” it’s important to understand a few problems related to Elasticsearch concepts index, source. See bellow important tips and explanations on these concepts

Log Context

Log”Failed to acquire searcher; source {}” classname is Engine.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         } catch (AlreadyClosedException ex) {
            throw ex;
        } catch (Exception ex) {
            maybeFailEngine("acquire_searcher"; ex);
            ensureOpen(ex); // throw EngineCloseException here if we are already closed
            logger.error(() -> new ParameterizedMessage("failed to acquire searcher; source {}"; source); ex);
            throw new EngineException(shardId; "failed to acquire searcher; source " + source; ex);
        } finally {
            Releasables.close(releasable);
        }
    }




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 What Causes Failed To Acquire Searc  

Error In Elasticsearch Logs Index E  

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