当执行相同的遍历查询时，Arango会随机重新启动

Question

我正在运行一系列从节点服务器到安装了Arango的Ubuntu AWS实例的同步请求。阿兰神的版本是3.1.7

在几个星期内，一切都很正常，但现在：

在随机的基础上，当我在我的查询中执行一个总是相同的查询时，我从节点得到一个{Error: socket挂起}，而arango似乎重新启动了，因为我在所有其他查询上得到了{Error: connect ECONNREFUSED}一小段时间。虽然我的数据在两次查询之间没有变化，但这种情况发生在6次中就有1次。

Web界面日志非常少，似乎不能解释哪里出了问题。阿兰神似乎创建了一个日志文件，但它很难解释。所有服务器指标都很好。

你对我如何在这个问题上前进有什么想法吗？我的数据是否已损坏？我怎么才能知道呢？

以下是我的日志文件的内容：

2017-02-22T16:24:57Z [11449] INFO ArangoDB 3.1.7 [linux] 64bit, using VPack 0.1.30, ICU 54.1, V8 5.0.71.39, OpenSSL 1.0.1f 6 Jan 2014
2017-02-22T16:24:57Z [11449] INFO using SSL options: SSL_OP_CIPHER_SERVER_PREFERENCE, SSL_OP_TLS_ROLLBACK_BUG
2017-02-22T16:24:57Z [11449] INFO Authentication is turned on
2017-02-22T16:24:57Z [11449] INFO Authentication system only
2017-02-22T16:24:57Z [11449] INFO Authentication for unix sockets is turned on
2017-02-22T16:24:57Z [11449] INFO file-descriptors (nofiles) hard limit is 131072, soft limit is 131072
2017-02-22T16:24:57Z [11449] INFO running WAL recovery (1 logfiles)
2017-02-22T16:24:57Z [11449] INFO replaying WAL logfile '/vol/data/standalone/journals/logfile-44002553.db' (1 of 1)
2017-02-22T16:24:57Z [11449] INFO WAL recovery finished successfully
2017-02-22T16:24:57Z [11449] INFO JavaScript using startup '/usr/share/arangodb3/js', application '/var/lib/arangodb3-apps'
2017-02-22T16:24:57Z [11449] INFO In database '_system': Database is up-to-date (30107/standalone/existing)
2017-02-22T16:24:57Z [11449] INFO In database 'X-DB': Database is up-to-date (30107/standalone/existing)
2017-02-22T16:24:57Z [11449] INFO using endpoint 'http+tcp://0.0.0.0:8529' for non-encrypted requests
2017-02-22T16:24:58Z [11449] INFO Please note that a new bugfix version '3.1.11' is available
2017-02-22T16:24:58Z [11449] INFO ArangoDB (version 3.1.7 [linux]) is ready for business. Have fun!

和：

2017-02-22T16:24:57Z [1311] ERROR {startup} child 11302 died a horrible death, signal 11
2017-02-22T16:27:57Z [1311] ERROR {startup} child 11449 died a horrible death, signal 11

我相信引起麻烦的查询是：

RETURN (
FOR i, j, k IN 0..3 INBOUND "Hint/26427214" GRAPH "X-graph"
FILTER k.vertices[1]._id LIKE "Drop/%"
AND k.vertices[2]._id LIKE "Hint/%"
AND k.vertices[3]._id LIKE "Drop/%"
FILTER k.vertices[1].hostname != k.vertices[3].hostname
FILTER k.vertices[2].type == "article"
SORT k.vertices[2].createdAt DESC
LIMIT 0, 1
RETURN UNION (
FOR v, e, p IN 0..2 INBOUND k.vertices[2]._id GRAPH "X-graph"
FILTER p.vertices[1]._id LIKE "Source/%"
AND p.vertices[2]._id LIKE "Twittos/%"
RETURN { key: p.vertices[0]._key, retweets: p.vertices[0].retweets, title: p.vertices[0].title, type: p.vertices[0].type, content: p.vertices[0].content, image: p.vertices[0].image, source: { key: p.vertices[1]._key, name: p.vertices[1].name, screenname: p.vertices[2].screenname, image: p.vertices[2].image }},
FOR v, e, p IN 0..1 INBOUND k.vertices[2]._id GRAPH "X-graph"
FILTER p.vertices[1]._id LIKE "Source/%"
RETURN { key: p.vertices[0]._key, retweets: p.vertices[0].retweets, title: p.vertices[0].title, type: p.vertices[0].type, content: p.vertices[0].content, image: p.vertices[0].image, source: { key: p.vertices[1]._key, name: p.vertices[1].name }},
FOR v, e, p IN 0 INBOUND k.vertices[2]._id GRAPH "X-graph" RETURN { key: p.vertices[0]._key, retweets: p.vertices[0].retweets, title: p.vertices[0].title, type: p.vertices[0].type, image: p.vertices[0].image, content: p.vertices[0].content })[0] )[*]

Answer 1

经过大量的研究，我试着简单地升级到arangod 3.1.11。这个问题似乎已经消失了。