Eu tenho um problema com o Elasticsearch, algumas vezes, ele tenta rodar o GC continuamente, já que este é incapaz de liberar porque o tamanho do heap configurado para 14GB (min e max) é completamente alocado:
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[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]}
Neste ponto, o ES não está respondendo e nós o reiniciamos
Quando vejo o heap ES e nossos operadores de aplicativos usam ES, a memória heap aumenta, a cada poucos minutos o GC é executado e o heap quase esvazia novamente, mas não completamente. E lentamente ao longo de muitos dias, parece não haver memória no heap disponível. Parece que houve um vazamento de memória, exceto como poderia estar em nosso código Ruby usando gem Tire, já que estamos falando de heap ES? Alguns padrões de uso do ES podem causar vazamento de memória ES?
Basicamente, o ES é um servidor dedicado com 16 GB de RAM, sem réplicas, 5 índices e 1 fragmento por índice. Ele é executado com java-1.7.0-openjdk-1.7.0.65-2.5.1.2.el6_5.x86_64, usa mlockall e min e heap máximo são ambos configurados para 14GB. Nada mais é executado no servidor. Usamos o Elasticsearch 0.90.x porque a equipe de desenvolvimento não pode arcar com a substituição da gema Pneu que eles usam para se conectar nos trabalhadores Ruby
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)
O maior índice é products e aparece como 164MB no Bigdesk. Como o ES pode usar até 14 GB ao longo do tempo?
Há algo de errado com os metadados do índice?
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Eu tentei usar um tamanho de heap mínimo / máximo de 6 GB, mas ele exibe o mesmo comportamento e só fica sem resposta mais cedo.