具有无限关系的Cypher查询需要永远

Question

我正试图为纽约地铁实施一个简单的图表数据库。

共有493个带标签的停靠点：STOP和属性{name：＆＃34;停止名称＆＃34;}，例如：

(n:STOP {name:"Van Cortlandt Park - 242 St"}) -[:DIRECT {dist:0.5}]-> (m:STOP {name:"238 St"})

共有566个关系[：DIRECT {dist：...}]

我想要得到的是一个节点列表和它们之间的总和（dist），从特定的停止开始，只返回具有一定总和（dist）的那些节点，cypher查询在我完成时运行完美限制关系数量，例如：

match p=(n:STOP {name:"Van Cortlandt Park - 242 St"})-[:DIRECT*1..10]-(m:STOP) 
WITH n,m,     
     reduce(acc=0, x in relationships(p)| acc + x.dist) as x 
WHERE x < 5 
return n.name, m.name, x 
limit 10

当我指定时会出现问题 - [：DIRECT *] - 大约10分钟后，查询几乎失败并出现未知错误

以下是具有限制的查询的分析：

==> +--------------------------------------------------------------------------------+
==> | n.name                        | m.name                    | x                  |
==> +--------------------------------------------------------------------------------+
==> | "Van Cortlandt Park - 242 St" | "238 St"                  | 0.33               |
==> | "Van Cortlandt Park - 242 St" | "231 St"                  | 0.78               |
==> | "Van Cortlandt Park - 242 St" | "Marble Hill - 225 St"    | 1.1800000000000002 |
==> | "Van Cortlandt Park - 242 St" | "215 St"                  | 1.6400000000000001 |
==> | "Van Cortlandt Park - 242 St" | "207 St"                  | 2.02               |
==> | "Van Cortlandt Park - 242 St" | "Dyckman St"              | 2.47               |
==> | "Van Cortlandt Park - 242 St" | "191 St"                  | 2.89               |
==> | "Van Cortlandt Park - 242 St" | "181 St"                  | 3.3400000000000003 |
==> | "Van Cortlandt Park - 242 St" | "168 St - Washington Hts" | 4.04               |
==> | "Van Cortlandt Park - 242 St" | "157 St"                  | 4.5600000000000005 |
==> +--------------------------------------------------------------------------------+
==> 10 rows
==> 
==> ColumnFilter(0)
==>   |
==>   +Slice
==>     |
==>     +Extract(0)
==>       |
==>       +Filter(0)
==>         |
==>         +ColumnFilter(1)
==>           |
==>           +Extract(1)
==>             |
==>             +ExtractPath
==>               |
==>               +Filter(1)
==>                 |
==>                 +TraversalMatcher
==> 
==> +------------------+------+--------+-------------+--------------------------------+
==> |         Operator | Rows | DbHits | Identifiers |                          Other |
==> +------------------+------+--------+-------------+--------------------------------+
==> |  ColumnFilter(0) |   10 |      0 |             | keep columns n.name, m.name, x |
==> |            Slice |   10 |      0 |             |                   {  AUTOINT3} |
==> |       Extract(0) |   10 |     40 |             |                 n.name, m.name |
==> |        Filter(0) |   10 |      0 |             |               x < {  AUTOINT2} |
==> |  ColumnFilter(1) |   10 |      0 |             |           keep columns n, m, x |
==> |       Extract(1) |   10 |    110 |             |                              x |
==> |      ExtractPath |   10 |      0 |           p |                                |
==> |        Filter(1) |   10 |     10 |             |            hasLabel(m:STOP(4)) |
==> | TraversalMatcher |   10 |     45 |             |              m,   UNNAMED52, m |
==> +------------------+------+--------+-------------+--------------------------------+

谢谢！