应用程序终止异常后,Neo4j Embedded数据库挂起

时间:2015-07-26 18:11:35

标签: neo4j cypher spring-data-neo4j graph-databases

我将基于Neo4j嵌入式数据库公开我的第一个应用程序并遇到严重阻塞问题 -

这是我之前关于数据库删除的问题,我在这里遇到了这个问题Effectively clear Neo4j database

我用:

OS: Windows 8.1
jdk1.8.0_51 
neo4j version 2.2.3
lucene version 3.6.2
spring-data-neo4j version 3.4.0.M1

我注意到如果我在终止我的应用程序之前使用graphDatabaseService.shutdown();方法,一切正常。否则数据库被销毁(不仅是我的应用程序,但是当我尝试加载我的时候,甚至Neo4j服务器也会挂起这个损坏的数据库带有Neo4j Web界面的嵌入式数据库)。

有什么方法可以让Neo4j Embedded数据库更具容错能力?在生产环境中出现第一个错误(例如停电事件)后,我将丢失所有数据。

我在这个问题上花了几天时间,但仍然没有想法如何继续它。请帮忙。

已更新

来自message.log的

信息

2015-07-27 08:51:59.232+0000 INFO  [o.n.k.i.DiagnosticsManager]:   index:
2015-07-27 08:51:59.233+0000 INFO  [o.n.k.i.DiagnosticsManager]:     lucene:
2015-07-27 08:51:59.233+0000 INFO  [o.n.k.i.DiagnosticsManager]:       node:
2015-07-27 08:51:59.233+0000 INFO  [o.n.k.i.DiagnosticsManager]:         node_auto_index:
2015-07-27 08:51:59.234+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2p.fdt: 2015-07-27T11:50:33+0300 - 44,78 MB
2015-07-27 08:51:59.234+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2p.fdx: 2015-07-27T11:50:33+0300 - 1,78 MB
2015-07-27 08:51:59.234+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2p.fnm: 2015-07-27T11:50:33+0300 - 54,00 B
2015-07-27 08:51:59.235+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2p.frq: 2015-07-27T11:50:34+0300 - 3,99 MB
2015-07-27 08:51:59.235+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2p.nrm: 2015-07-27T11:50:34+0300 - 684,50 kB
2015-07-27 08:51:59.235+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2p.prx: 2015-07-27T11:50:34+0300 - 4,12 MB
2015-07-27 08:51:59.236+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2p.tii: 2015-07-27T11:50:34+0300 - 212,98 kB
2015-07-27 08:51:59.236+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2p.tis: 2015-07-27T11:50:34+0300 - 21,83 MB
2015-07-27 08:51:59.237+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2s.cfs: 2015-07-27T11:50:37+0300 - 1,48 MB
2015-07-27 08:51:59.237+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2t.cfs: 2015-07-27T11:50:38+0300 - 1,55 MB
2015-07-27 08:51:59.237+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2u.cfs: 2015-07-27T11:50:39+0300 - 1,57 MB
2015-07-27 08:51:59.238+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _2z.cfs: 2015-07-27T11:50:43+0300 - 1,46 MB
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2015-07-27 08:51:59.238+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _32.cfs: 2015-07-27T11:51:56+0300 - 3,36 MB
2015-07-27 08:51:59.239+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _x.fdt: 2015-07-27T11:49:35+0300 - 19,12 MB
2015-07-27 08:51:59.239+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _x.fdx: 2015-07-27T11:49:35+0300 - 773,77 kB
2015-07-27 08:51:59.239+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _x.fnm: 2015-07-27T11:49:35+0300 - 54,00 B
2015-07-27 08:51:59.240+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _x.frq: 2015-07-27T11:49:35+0300 - 1,72 MB
2015-07-27 08:51:59.240+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _x.nrm: 2015-07-27T11:49:35+0300 - 290,17 kB
2015-07-27 08:51:59.240+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _x.prx: 2015-07-27T11:49:35+0300 - 1,77 MB
2015-07-27 08:51:59.240+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _x.tii: 2015-07-27T11:49:35+0300 - 72,69 kB
2015-07-27 08:51:59.241+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _x.tis: 2015-07-27T11:49:35+0300 - 9,29 MB
2015-07-27 08:51:59.241+0000 INFO  [o.n.k.i.DiagnosticsManager]:           segments.gen: 2015-07-27T11:51:57+0300 - 20,00 B
2015-07-27 08:51:59.241+0000 INFO  [o.n.k.i.DiagnosticsManager]:           segments_2: 2015-07-27T11:51:57+0300 - 2,00 kB
2015-07-27 08:51:59.242+0000 INFO  [o.n.k.i.DiagnosticsManager]:           write.lock: 2015-07-27T11:51:55+0300 - 0,00 B
2015-07-27 08:51:59.242+0000 INFO  [o.n.k.i.DiagnosticsManager]:         - Total: 2015-07-27T11:51:57+0300 - 133,52 MB
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2015-07-27 08:51:59.242+0000 INFO  [o.n.k.i.DiagnosticsManager]:       relationship:
2015-07-27 08:51:59.242+0000 INFO  [o.n.k.i.DiagnosticsManager]:         __rel_types__:
2015-07-27 08:51:59.243+0000 INFO  [o.n.k.i.DiagnosticsManager]:           segments.gen: 2015-07-27T11:50:46+0300 - 20,00 B
2015-07-27 08:51:59.243+0000 INFO  [o.n.k.i.DiagnosticsManager]:           segments_1: 2015-07-27T11:50:46+0300 - 32,00 B
2015-07-27 08:51:59.243+0000 INFO  [o.n.k.i.DiagnosticsManager]:         - Total: 2015-07-27T11:51:53+0300 - 52,00 B
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2015-07-27 08:51:59.244+0000 INFO  [o.n.k.i.DiagnosticsManager]:   index.db: 2015-07-27T11:48:33+0300 - 411,00 B
2015-07-27 08:51:59.245+0000 INFO  [o.n.k.i.DiagnosticsManager]:   lock: 2015-07-27T11:48:16+0300 - 0,00 B
2015-07-27 08:51:59.249+0000 INFO  [o.n.k.i.DiagnosticsManager]:   messages.log: 2015-07-27T11:51:54+0300 - 47,16 kB
2015-07-27 08:51:59.250+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore: 2015-07-27T11:51:57+0300 - 8,00 kB
2015-07-27 08:51:59.251+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.counts.db.a: 2015-07-27T11:51:57+0300 - 2,80 kB
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2015-07-27 08:51:59.252+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.id: 2015-07-27T11:51:58+0300 - 9,00 B
2015-07-27 08:51:59.253+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.labeltokenstore.db: 2015-07-27T11:50:46+0300 - 8,00 kB
2015-07-27 08:51:59.254+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.labeltokenstore.db.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.255+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.labeltokenstore.db.names: 2015-07-27T11:50:46+0300 - 7,98 kB
2015-07-27 08:51:59.256+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.labeltokenstore.db.names.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.259+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.nodestore.db: 2015-07-27T11:51:57+0300 - 5,69 MB
2015-07-27 08:51:59.260+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.nodestore.db.id: 2015-07-27T11:51:58+0300 - 9,00 B
2015-07-27 08:51:59.260+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.nodestore.db.labels: 2015-07-27T11:48:22+0300 - 68,00 B
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2015-07-27 08:51:59.265+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db: 2015-07-27T11:51:57+0300 - 31,17 MB
2015-07-27 08:51:59.265+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.arrays: 2015-07-27T11:48:22+0300 - 128,00 B
2015-07-27 08:51:59.266+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.arrays.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.267+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.268+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.index: 2015-07-27T11:50:46+0300 - 8,00 kB
2015-07-27 08:51:59.269+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.index.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.269+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.index.keys: 2015-07-27T11:50:46+0300 - 7,98 kB
2015-07-27 08:51:59.270+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.index.keys.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.274+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.strings: 2015-07-27T11:51:57+0300 - 41,28 MB
2015-07-27 08:51:59.274+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.propertystore.db.strings.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.278+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.relationshipgroupstore.db: 2015-07-27T11:51:57+0300 - 151,68 kB
2015-07-27 08:51:59.280+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.relationshipgroupstore.db.id: 2015-07-27T11:51:58+0300 - 9,00 B
2015-07-27 08:51:59.283+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.relationshipstore.db: 2015-07-27T11:51:57+0300 - 37,01 MB
2015-07-27 08:51:59.284+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.relationshipstore.db.id: 2015-07-27T11:51:58+0300 - 9,00 B
2015-07-27 08:51:59.285+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.relationshiptypestore.db: 2015-07-27T11:50:46+0300 - 8,00 kB
2015-07-27 08:51:59.286+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.relationshiptypestore.db.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.286+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.relationshiptypestore.db.names: 2015-07-27T11:50:46+0300 - 7,98 kB
2015-07-27 08:51:59.287+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.relationshiptypestore.db.names.id: 2015-07-27T11:51:57+0300 - 9,00 B
2015-07-27 08:51:59.287+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.schemastore.db: 2015-07-27T11:50:46+0300 - 8,00 kB
2015-07-27 08:51:59.288+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.schemastore.db.id: 2015-07-27T11:51:58+0300 - 9,00 B
2015-07-27 08:51:59.288+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.transaction.db.0: 2015-07-27T11:50:43+0300 - 251,72 MB
2015-07-27 08:51:59.289+0000 INFO  [o.n.k.i.DiagnosticsManager]:   neostore.transaction.db.1: 2015-07-27T11:50:48+0300 - 6,12 MB
2015-07-27 08:51:59.289+0000 INFO  [o.n.k.i.DiagnosticsManager]:   schema:
2015-07-27 08:51:59.289+0000 INFO  [o.n.k.i.DiagnosticsManager]:     index:
2015-07-27 08:51:59.289+0000 INFO  [o.n.k.i.DiagnosticsManager]:       lucene:
2015-07-27 08:51:59.289+0000 INFO  [o.n.k.i.DiagnosticsManager]:         1:
2015-07-27 08:51:59.290+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _4v.cfs: 2015-07-27T11:50:35+0300 - 395,64 kB
2015-07-27 08:51:59.290+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _5c.cfs: 2015-07-27T11:50:44+0300 - 49,47 kB
2015-07-27 08:51:59.290+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _5d.fdt: 2015-07-27T11:51:58+0300 - 0,00 B
2015-07-27 08:51:59.291+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _5d.fdx: 2015-07-27T11:51:58+0300 - 0,00 B
2015-07-27 08:51:59.291+0000 INFO  [o.n.k.i.DiagnosticsManager]:           failure-message: 2015-07-27T11:48:27+0300 - 16,00 kB
2015-07-27 08:51:59.291+0000 INFO  [o.n.k.i.DiagnosticsManager]:           segments.gen: 2015-07-27T11:50:44+0300 - 20,00 B
2015-07-27 08:51:59.292+0000 INFO  [o.n.k.i.DiagnosticsManager]:           segments_2: 2015-07-27T11:50:44+0300 - 542,00 B
2015-07-27 08:51:59.292+0000 INFO  [o.n.k.i.DiagnosticsManager]:           write.lock: 2015-07-27T11:48:28+0300 - 0,00 B
2015-07-27 08:51:59.292+0000 INFO  [o.n.k.i.DiagnosticsManager]:         - Total: 2015-07-27T11:51:58+0300 - 461,66 kB
2015-07-27 08:51:59.292+0000 INFO  [o.n.k.i.DiagnosticsManager]:         2:
2015-07-27 08:51:59.293+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _36.cfs: 2015-07-27T11:50:03+0300 - 103,38 kB
2015-07-27 08:51:59.293+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _5b.cfs: 2015-07-27T11:50:44+0300 - 73,52 kB
2015-07-27 08:51:59.293+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _5c.fdt: 2015-07-27T11:51:58+0300 - 0,00 B
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2015-07-27 08:51:59.294+0000 INFO  [o.n.k.i.DiagnosticsManager]:           failure-message: 2015-07-27T11:48:28+0300 - 16,00 kB
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2015-07-27 08:51:59.297+0000 INFO  [o.n.k.i.DiagnosticsManager]:           _5b.fdt: 2015-07-27T11:51:58+0300 - 0,00 B
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2015-07-27 08:51:59.297+0000 INFO  [o.n.k.i.DiagnosticsManager]:           failure-message: 2015-07-27T11:48:28+0300 - 16,00 kB
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2015-07-27 08:51:59.298+0000 INFO  [o.n.k.i.DiagnosticsManager]:           segments_2: 2015-07-27T11:50:44+0300 - 1,01 kB
2015-07-27 08:51:59.298+0000 INFO  [o.n.k.i.DiagnosticsManager]:           write.lock: 2015-07-27T11:48:28+0300 - 0,00 B
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2015-07-27 08:51:59.300+0000 INFO  [o.n.k.i.DiagnosticsManager]:     label:
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2015-07-27 08:51:59.302+0000 INFO  [o.n.k.i.DiagnosticsManager]:         _3d_1.del: 2015-07-27T11:50:44+0300 - 37,00 B
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2015-07-27 08:51:59.302+0000 INFO  [o.n.k.i.DiagnosticsManager]:         _5f.cfs: 2015-07-27T11:50:44+0300 - 90,51 kB
2015-07-27 08:51:59.303+0000 INFO  [o.n.k.i.DiagnosticsManager]:         _5g.cfs: 2015-07-27T11:51:56+0300 - 18,07 kB
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2015-07-27 08:51:59.304+0000 INFO  [o.n.k.i.DiagnosticsManager]:   - Total: 2015-07-27T11:48:27+0300 - 2,82 MB
2015-07-27 08:51:59.305+0000 INFO  [o.n.k.i.DiagnosticsManager]:   store_lock: 2015-07-27T11:48:16+0300 - 0,00 B
2015-07-27 08:51:59.305+0000 INFO  [o.n.k.i.DiagnosticsManager]: --- STARTED diagnostics for KernelDiagnostics:StoreFiles END ---
2015-07-27 08:51:59.378+0000 INFO  [o.n.k.EmbeddedGraphDatabase]: Database is now ready
2015-07-27 08:52:02.592+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 399ms.
2015-07-27 08:52:08.474+0000 INFO  [o.n.k.i.a.i.s.OnlineIndexSamplingJob]: Sampled index :Criterion(name) with 18159 unique values in sample of avg size 18159 taken from index containing 18159 entries
2015-07-27 08:52:11.514+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 354ms.
2015-07-27 08:52:13.692+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 336ms.
2015-07-27 08:52:18.760+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 3728ms.
2015-07-27 08:52:18.764+0000 INFO  [o.n.k.i.a.i.s.OnlineIndexSamplingJob]: Sampled index :CriterionGroup(name) with 1691 unique values in sample of avg size 1691 taken from index containing 1691 entries
2015-07-27 08:52:19.951+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 490ms.
2015-07-27 08:52:25.130+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 4476ms.
2015-07-27 08:52:26.492+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 761ms.
2015-07-27 08:52:33.603+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 5408ms.
2015-07-27 08:52:35.734+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 809ms.
2015-07-27 08:52:43.564+0000 WARN  [o.n.k.EmbeddedGraphDatabase]: GC Monitor: Application threads blocked for 5601ms.

在删除操作期间,应用程序会挂起tx.close();行:

public class Neo4jUtils {

    final static Logger logger = LoggerFactory.getLogger(Neo4jUtils.class);

    private static final int BATCH_SIZE = 10;

    public static void cleanDb(Neo4jTemplate template) {
        logger.info("Cleaning database");
        long deletedNodesCount = 0;
        do {
            GraphDatabaseService graphDatabaseService = template.getGraphDatabaseService();
            Transaction tx = graphDatabaseService.beginTx();
            try {
                Result<Map<String, Object>> result = template.query("MATCH (n) WITH n LIMIT " + BATCH_SIZE + " OPTIONAL MATCH (n)-[r]-() DELETE n, r RETURN count(n) as count", null);
                deletedNodesCount = (long) result.single().get("count");
                tx.success();
                logger.info("Deleted " + deletedNodesCount + " nodes...");
            } catch (Throwable th) {
                logger.error("Error while deleting database", th);
                throw th;
            } finally {
                tx.close();
            }
        } while (deletedNodesCount > 0);
    }

}

已更新

我找到了这个问题的一般来源,但现在不知道如何修复它。

这是我的WebSecurityConfig

@Configuration
@EnableWebSecurity
@EnableWebMvcSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {


    @Autowired
    private SocialAuthenticationSuccessHandler socialAuthenticationSuccessHandler;

    @Autowired
    private TokenAuthenticationService tokenAuthenticationService;

    @Autowired
    private TokenAuthenticationFilter tokenAuthenticationFilter;

    @Autowired
    private DBUserDetailsService userDetailsService;

.....

}

我自动安装了4个内部使用Neo4j的字段(DAO,存储库等)。当我的WebSecurityConfig中存在这些字段时,Neo4j在不干净关闭后挂起重启。当我评论这些字段时,问题就会消失。

有什么不对?

2 个答案:

答案 0 :(得分:2)

Neo4j Enterprise允许您在群集中运行多个Neo4j实例,为您提供高可用性和扩展读取。为了在n失败的同时生存,您需要2n+1个实例。

如果是不干净的关闭,预期的行为是下次启动时的自动恢复操作(可能需要一些时间)。在过去的几年里,在不干净的关闭之后,我从未经历过处于不可恢复状态的Neo4j。

对于嵌入式使用案例,请务必在JVM shutdown hook中致电gdb.shutdown()

答案 1 :(得分:0)

我可以确认此问题与以下修复有关 - https://github.com/neo4j/neo4j/commit/c9596af0d990d7dde9a9053799b7295985ae3c05

我已应用此提交中的更改,问题就消失了。

所以,现在我正在等待Neo4j 2.2.4发布。

您知道Neo4j 2.2.4的计划发布日期吗?