Cassandra 3.3 - 群集节点 - 不规则行为

时间：2016-06-24 20:19:12

标签： cassandra cassandra-3.0

我有一个符合节点的Cassandra集群 {192.168.120.57,192.168.120.58,192.168.120.59}，复制因子为2

我检测到节点192.168.120.59表现不规律 - ＆GT;服务正在运行（sudo service cassandra status）
- ＆GT; nodetool还告诉我节点正在运行

XXXX@cassandra-prod03:~$ nodetool status
Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address         Load       Tokens       Owns    Host ID                               Rack
UN  192.168.120.57  4.05 GB    256          ?       6d0f5961-a600-42c2-8ba5-5b6ebff52ceb  rack1
UN  192.168.120.58  4.4 GB     256          ?       53bc77ff-50b3-4bf0-bd55-17e2bb7c8208  rack1
UN  192.168.120.59  2.77 GB    256          ?       03d8d7fd-1d86-4034-a537-9915adb0d4b3  rack1

但是 - ＆gt;我无法通过DevCenter连接（我最后一次尝试，cassandra.yml没有改变）

我查看了这个节点的日志（192.168.120.59），并显示：

ERROR [HintsDispatcher:1] 2016-06-23 16:57:01,827 HintsDispatchExecutor.java:224 - Failed to dispatch hints file 6d0f5961-a600-42c2-8ba5-5b6ebff52ceb-1465184315371-1.hints: file is corrupted ({})
ERROR [HintsDispatcher:1] 2016-06-23 16:57:01,830 CassandraDaemon.java:195 - Exception in thread Thread[HintsDispatcher:1,1,main]
ERROR [HintsDispatcher:1] 2016-06-23 16:57:01,834 StorageService.java:470 - Stopping gossiper
ERROR [HintsDispatcher:1] 2016-06-23 16:57:03,842 StorageService.java:480 - Stopping native transport

在其他节点中，日志显示了很多次：

DEBUG [GossipTasks:1] 2016-06-24 07:56:21,551 Gossiper.java:336 - Convicting /192.168.120.59 with status shutdown - alive false
DEBUG [GossipTasks:1] 2016-06-24 07:56:22,552 Gossiper.java:336 - Convicting /192.168.120.59 with status shutdown - alive false
DEBUG [GossipTasks:1] 2016-06-24 07:56:23,552 Gossiper.java:336 - Convicting /192.168.120.59 with status shutdown - alive false
DEBUG [GossipTasks:1] 2016-06-24 07:56:24,553 Gossiper.java:336 - Convicting /192.168.120.59 with status shutdown - alive false
DEBUG [GossipTasks:1] 2016-06-24 07:56:25,553 Gossiper.java:336 - Convicting /192.168.120.59 with status shutdown - alive false
DEBUG [GossipTasks:1] 2016-06-24 07:56:26,553 Gossiper.java:336 - Convicting /192.168.120.59 with status shutdown - alive false
DEBUG [GossipTasks:1] 2016-06-24 07:56:27,554 Gossiper.java:336 - Convicting /192.168.120.59 with status shutdown - alive false

这些是我所做的事情，并没有起作用：
1）重启机器 2）nodetool修复。

XXXXs@cassandra-prod03:~$ nodetool repair
[2016-06-23 17:07:37,582] Starting repair command #1, repairing keyspace recommendersjobs with repair options (parallelism: parallel, primary range: false, incremental: true, job threads: 1, ColumnFamilies: [], dataCenters: [], hosts: [], # of ranges: 512)
Jun 23, 2016 5:53:57 PM ClientCommunicatorAdmin Checker-run
WARNING: Failed to check the connection: java.net.SocketTimeoutException: Read timed out
Exception occurred during clean-up. java.lang.reflect.UndeclaredThrowableException
error: [2016-06-23 18:06:22,229] JMX connection closed. You should check server log for repair status of keyspace recommendersjobs(Subsequent keyspaces are not going to be repaired).
-- StackTrace --
java.io.IOException: [2016-06-23 18:06:22,229] JMX connection closed. You should check server log for repair status of keyspace recommendersjobs(Subsequent keyspaces are not going to be repaired).
at org.apache.cassandra.tools.RepairRunner.handleConnectionFailed(RepairRunner.java:97)
at org.apache.cassandra.utils.progress.jmx.JMXNotificationProgressListener.handleNotification(JMXNotificationProgressListener.java:86)
at javax.management.NotificationBroadcasterSupport.handleNotification(NotificationBroadcasterSupport.java:275)
at javax.management.NotificationBroadcasterSupport$SendNotifJob.run(NotificationBroadcasterSupport.java:352)
at javax.management.NotificationBroadcasterSupport$1.execute(NotificationBroadcasterSupport.java:337)
at javax.management.NotificationBroadcasterSupport.sendNotification(NotificationBroadcasterSupport.java:248)
at javax.management.remote.rmi.RMIConnector.sendNotification(RMIConnector.java:441)
at javax.management.remote.rmi.RMIConnector.access$1200(RMIConnector.java:121)
at javax.management.remote.rmi.RMIConnector$RMIClientCommunicatorAdmin.gotIOException(RMIConnector.java:1531)
at javax.management.remote.rmi.RMIConnector$RMINotifClient.fetchNotifs(RMIConnector.java:1352)

3）nodetool scrub。

在此之后我跟着这页https://docs.datastax.com/en/cassandra/1.2/cassandra/operations/ops_backup_noderestart_t.html

在呈现不规则行为的节点上：
1）删除所有表格
2）复制并粘贴快照子目录中的表
3）重新启动cassandra服务（sudo service cassandra start）

现在开发中心可以连接

4）我再次跑nodetool repair，似乎没有完成。它已运行超过3个小时，仍然是0％（但现在没有抛出其他错误），但我认为它不起作用。

XXXX@cassandra-prod03:/var/lib/cassandra/data/recommendersjobs$ nodetool repair
[2016-06-24 12:24:13,901] Starting repair command #2, repairing keyspace recommendersjobs with repair options (parallelism: parallel, primary range: false, incremental: true, job threads: 1, ColumnFamilies: [], dataCenters: [], hosts: [], # of ranges: 512)
[2016-06-24 12:24:17,235] Repair session 7990e900-3a30-11e6-9861-e998758604bf for range [(-4211712190859502280,-4203992560184719114], (-8318576077833367495,-8293862912754480840], (6846385493332587078,6848188842228182830], (-6460899805527117383,-6451580681320322560], (-927549969226058129,-890279568362794135], (-6984061332646781425,-6971866923830433843], (4166814791483192953,4181831925595728309], (212986607214778070,288868023576418487], (656453115636318699,670358990995510048], (-3857111065907140708,-3844748631754416189], (-731643009820930522,-708535538994856284], (-3646398519882341977,-3630383383747491969], (-4215258070829115921,-4211712190859502280], (6972519766285293067,6983272857539313387], (8698322395242654268,8707318407090795417], (-1229710138608978352,-1142107267252652523], (-6043663680829718954,-6000947666680635781], (-2555062915045199657,-2518876915835081063], (700476075055800053,714305291929584762], (-9040157763677832405,-9035752029446223323], 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(-7634134348451706917,-7604581392807650182], (1632362492578265392,1635093197288200819], (291067515209041750,330577967974463458], (7789905572870286790,7790287256445162065], (-8007287567032110044,-8001929233768101133], (-6971866923830433843,-6946999157236744448], (9032628945801968053,9034829150987061085], (-4798814403290155024,-4780493053770543287], (3905716352976079268,3920453505268467479], (8995803891393002810,8996665254881958342], (-1393787270658712827,-1355888553876954583], (6522490073023565012,6553480210988421066], (7162495952820208409,7199369658829377994], (4882596066849804097,4927485308468803128], (-5893410924582496350,-5858193870200257506], (8233960782654491894,8252708412304213777], (6725081429318018351,6766473197422691050], (-5303078638925764028,-5222304299920694120], (2376875294823216717,2379477119284337609], (-7393173741279261649,-7376038212607696986], (-1337212328034401607,-1336371416389083059], (902246412094263205,902703964241874282], (288868023576418487,291067515209041750], (1341203791801750057,1364316712425392743], (5199663539610295629,5228334028316552580], (6447403433784268090,6476681916885657705], (-3481009398659298196,-3391281017675748608], (4266791030997837989,4315496651682018963], (3115136329005690845,3130822610289703870], (-7599009809842308024,-7598746015885846943]]] Validation failed in /192.168.120.58 (progress: 0%)

在此日志中出现：
1）failed with error [repair #7990e900-3a30-11e6-9861-e998758604bf on recommendersjobs/postulationsbyuser（靠近中间）
2）Validation failed in /192.168.120.58 (progress: 0%)（在最后一部分）

当此修复正在运行时（我认为它正在运行），在此节点的日志中以及群集的其他节点中，这会出现多次：

DEBUG [ReadRepairStage:4] 2016-06-24 14:08:18,318 ReadCallback.java:235 - Digest mismatch:
org.apache.cassandra.service.DigestMismatchException: Mismatch for key DecoratedKey(-3297346077674417080, 42555f31313131303131333538) (d41d8cd98f00b204e9800998ecf8427e vs 9e7f1588ffcd53d13ab3f8bb2be0f05e)
    at org.apache.cassandra.service.DigestResolver.resolve(DigestResolver.java:85) ~[apache-cassandra-3.3.jar:3.3]
    at org.apache.cassandra.service.ReadCallback$AsyncRepairRunner.run(ReadCallback.java:226) ~[apache-cassandra-3.3.jar:3.3]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_91]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_91]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]

注1：由于复制因子为2，cassandra现在正在工作 注2：cassandra Cluster正在生产中使用，应用程序正在插入和读取行。

我该怎么做才能纠正这种不正常行为？ 我想创建一个新节点并将其与不规则节点交换，执行此操作的正确步骤是什么？

1 个答案:

答案 0 :(得分：0)

当节点没有响应/发生故障时

 如果您可以创建一个将重新启动故障节点的新VM。 请参阅：https://docs.datastax.com/en/cassandra/3.0/cassandra/operations/opsReplaceNode.html

如果您不想创建新VM并使用现有的故障节点。
重要提示：需要有一个复制因子，允许您删除所有受影响节点的数据。

nodetool decommission (On that node)

请参阅：https://docs.datastax.com/en/cassandra/3.0/cassandra/tools/toolsDecommission.html 

sudo rm -rf /var/lib/cassandra/*

清除/删除节点中的所有数据 请参阅：https://docs.datastax.com/en/cassandra/3.0/cassandra/initialize/referenceClearCpkgData.html 

sudo service cassandra start

一段时间后，

nodetool repair

如果nodetool修复FAILS：
对于密钥空间中的表：

nodetool scrub <keyspace> <table>

在每个节点中→查看节点的日志并等待完成

run nodetool repair <keyspace> <table>

仅限一个节点（任何人）

注意：没有必要为每个表运行，你可以运行：

nodetool scrub <keyspace>

在每个节点中→查看节点的日志并等待完成

nodetool repair <keyspace>

我首先建议尝试使用1个表来查看该表的日志，并更好地理解发生了什么 注意：
将loggin级别设置为INFO以查看重要的事情

nodetool setlogginglevel org.apache.cassandra INFO
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