Question

我们收到此消息：

[2017-08-11T04：00：02,908] [WARN] [r.suppressed] path：/ _snapshot / s3_currently / curator-20170811040002，params：{repository = s3_currently，wait_for_completion = true，snapshot = curator-20170811040002} org.elasticsearch.snapshots.ConcurrentSnapshotExecutionException：[s3_currently：curator-20170811040002]快照已在运行

我们已经为x-pack策展人配置了两个操作：

/home/curator/actions/currently.yml
---
actions:
  1:
    action: snapshot
    description: Create snapshot every 30 minutes.
    options:
      repository: s3_currently
      wait_for_completion: true
    filters:
    - filtertype: alias
      aliases: living
  2:
    action: delete_snapshots
    description: Remove recently snapshots
    options:
      repository: s3_currently
      retry_interval: 120
      retry_count: 3
    filters:
    - filtertype: count
      count: 48

/home/curator/actions/currently-dev.yml：

---
actions:
  1:
    action: snapshot
    description: Create snapshot every hour for development.
    options:
      repository: s3_currently_dev
      wait_for_completion: true
    filters:
    - filtertype: alias
      aliases: living
  2:
    action: delete_snapshots
    description: Remove recently snapshots
    options:
      repository: s3_currently_dev
      retry_interval: 120
      retry_count: 3
    filters:
    - filtertype: count
      count: 24

我们已经添加了两个cron作业：

0 * * * * -> currently_dev
0,30 * * * * -> currently

有什么想法吗？似乎elasticsearch不允许执行两个并发快照，是吗？

Answer 1

Elasticsearch不允许一次运行多个快照。这样做的原因是它被迫在快照期间冻结所选索引的Lucene段。对于多个并发快照而言，集群执行此操作将非常繁重，而不是在处理方面，而是在始终如何跟踪所有段的方面。它必须允许将新数据编入新段，而其他数据则被锁定/冻结以进行快照。这可能会造成开放段太多的情况，这可能会剥夺一个或多个节点所需的内存资源。因此，Elasticsearch一次只允许一个快照更安全。

ElasticSearch：策展人并发快照

1 个答案: