我对 Elasticsearch 有疑问，有时，它会尝试连续运行 GC，因为这个无法释放，因为据说堆大小设置为 14GB（最小和最大）已完全分配：
(...)
[2014-09-18 13:43:45,984][INFO ][monitor.jvm ] [staging02.onldev] [gc][old][1128185][65590] duration [7.1s], collections
[1]/[7.2s], total [7.1s]/[9.3h], memory [13.9gb]->[13.9gb]/[13.9gb], all_pools {[young] [532.5mb]->[532.5mb]/[532.5mb]}{[survivor] [
49.9mb]->[49.6mb]/[66.5mb]}{[old] [13.3gb]->[13.3gb]/[13.3gb]}
[2014-09-18 13:43:53,307][INFO ][monitor.jvm ] [staging02.onldev] [gc][old][1128186][65591] duration [7.2s], collections
[1]/[7.3s], total [7.2s]/[9.3h], memory [13.9gb]->[13.9gb]/[13.9gb], all_pools {[young] [532.5mb]->[532.5mb]/[532.5mb]}{[survivor] [
49.6mb]->[49.7mb]/[66.5mb]}{[old] [13.3gb]->[13.3gb]/[13.3gb]}
[2014-09-18 13:43:58,647][INFO ][monitor.jvm ] [staging02.onldev] [gc][old][1128187][65592] duration [5.2s], collections
[1]/[5.3s], total [5.2s]/[9.3h], memory [13.9gb]->[13.9gb]/[13.9gb], all_pools {[young] [532.5mb]->[532.5mb]/[532.5mb]}{[survivor] [
49.7mb]->[49.8mb]/[66.5mb]}{[old] [13.3gb]->[13.3gb]/[13.3gb]}
此时ES无响应，我们重启一下
当我观察 ES 堆，并且我们的应用程序工作人员使用 ES 时，堆内存会增长，每隔几分钟 GC 就会运行一次，堆几乎会再次清空，但并非完全清空。并且在很多天里慢慢地，堆中似乎没有可用的内存。看起来是否存在内存泄漏，除了我们使用 Tire gem 的 Ruby 代码中怎么可能，因为我们正在谈论 ES heap ？ES 的某些使用模式会导致 ES 泄漏内存吗？
基本上，ES 是一个具有 16GB RAM、无副本、5 个索引和每个索引 1 个分片的专用服务器。它使用 java-1.7.0-openjdk-1.7.0.65-2.5.1.2.el6_5.x86_64 运行，使用 mlockall，最小和最大堆都设置为 14GB。没有其他东西在服务器上运行。我们使用 Elasticsearch 0.90.x 是因为开发团队负担不起更换他们用来连接 Ruby 工作者的 Tire gem
products
size: 164Mi (164Mi)
docs: 98,760 (157,138)
product_brands
size: 4.52Mi (4.52Mi)
docs: 5,123 (5,123)
product_categories
size: 358ki (358ki)
docs: 538 (538)
store_company_categories
size: 389ki (389ki)
docs: 4,028 (4,028)
stores
size: 1.44Mi (1.44Mi)
docs: 1,090 (1,090)
最大的索引是products, 在 Bigdesk 中显示为 164MB。随着时间的推移，ES 如何使用到 14GB？
索引元数据有问题吗？
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我尝试使用 6GB 的最小/最大堆大小，但它表现出相同的行为，只是很快变得无响应。