Failed to sync translog – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch is unable to synchronize the transaction log (translog). This could be due to a disk space issue, a network connectivity problem, or a file corruption issue. To resolve this, you can try freeing up disk space, checking your network connection, or restoring from a backup. If the issue persists, you may need to rebuild your index.

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

Log Context

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

                        shard.sync();
                    }
                } catch (AlreadyClosedException ex) {
                    // fine - continue;
                } catch (IOException e) {
                    logger.warn("failed to sync translog"; e);
                }
            }
        }
    }

 

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