服务器集群之间忽然ssh跳转不通 # ssh 192.168.0.1The authenticity of host '192.168.0.1 (192.168.0.1)' can't be established.RSA1 key fingerprint is 07:e4:54:79:62:60:22:c2:72:23:21:00:54:a0:90:79.Are you sure you want to continue connecting (yes/no)? 输入yes之后要求输入密码,但…

kafka0.8.1 一 问题现象 生产环境kafka服务器134.135.136分别在10月11号.10月13号挂掉: 134日志 [2014-10-13 16:45:41,902] FATAL [KafkaApi-134] Halting due to unrecoverable I/O error while handling produce request:  (kafka.server.KafkaApis) 135日志 [2014-10-11 11:02:35,754] FATAL […

最近把一些sql执行从hive改到spark,发现执行更慢,sql主要是一些insert overwrite操作,从执行计划看到,用到InsertIntoHiveTable spark-sql> explain insert overwrite table test2 select * from test1;== Physical Plan ==InsertIntoHiveTable MetastoreRelation temp, test2, true, false+- HiveTableSc…

问题现象:hive执行sql报错 select count(*) from test_hive_table; 报错 Error: java.io.IOException: org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=36, exceptions: Wed May 16 10:22:17 CST 2018, null, java.net.SocketTimeoutException:…

Spark2.1.1 最近运行spark任务时会发现任务经常运行很久,具体job如下: Job Id  ▾ Description Submitted Duration Stages: Succeeded/Total Tasks (for all stages): Succeeded/Total 16 (kill)treeReduce at CRFWithLBFGS.scala:160 2018/12/03 12:39:50 2.3 h 0/5 196/4723 job中正在运行的stage如下…

一 问题 Dubbo monitor所在服务器状态异常,iowait一直很高,load也一直很高,监控如下: iowait如图: load如图: 二 分析 通过iotop命令可以查看当前系统中磁盘io情况以及进程占用磁盘io的情况 从中可以定位到占用io进程的pid: 通过 cat /proc/${pid}/io 可以查看一个进程具体的读写状况: 通过 ps aux|grep ${pid} 可以查到这个进程具体的命令: 通过以上命令定位到进程为dubbo的monitor进程,用jstack打印线…

kafka_2.8.0-0.8.1 一 现象 生产环境一组kafka集群经常发生问题,现象是kafka在zookeeper上的broker节点消失,此时kafka进程和端口都在,然后每个broker都在报错,主要是 1) [2017-01-09 12:40:53,832] INFO Partition [topic1,3] on broker 1361: Shrinking ISR for partition [topic1,3] from 1351,1361,1341 to 1361 (kaf…

mesos agent启动失败,报错如下: Feb 15 22:03:18 server1.bj mesos-slave[1190]: E0215 22:03:18.622994 1192 slave.cpp:7311] EXIT with status 1: Failed to perform recovery: Incompatible agent info detected....Feb 15 22:03:18 server1.bj mesos-slave[1190]: ---------…

集群中有一台datanode一直启动报错如下: java.net.BindException: Problem binding to [$server1:50020] java.net.BindException: Address already in use; For more details see: http://wiki.apache.org/hadoop/BindException 查看端口是否被占用 # netstat -tnlp|grep 50020 发现没有进程在监听50020端…

spark 2.1.1 spark应用中有一些task非常慢,持续10个小时,有一个task日志如下: 2019-01-24 21:38:56,024 [dispatcher-event-loop-22] INFO org.apache.spark.executor.CoarseGrainedExecutorBackend - Got assigned task 40312019-01-24 21:38:56,024 [Executor task launch worker for task 4…