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HDFS客户端无法删除超长目录 问题背景与现象 执行hadoop fs -rm -r -f obs://<obs_path>命令,删除OBS超长目录出现如下报错: 2022-02-28 17:12:45,605 INFO internal.RestStorageService: OkHttp
DataStream[String] = env.addSource(new SimpleStringGeneratorScala) messageStream.addSink(new FlinkKafkaProducer(paraTool.get("topic"),
配置项 参考值 作用 merge_tree.max_replicated_merges_with_ttl_in_queue CPU核数一半 在ReplicatedMergeTree队列中允许同时使用TTL合并部件的任务数。
13 oranges','\b\d+\b',12,2);-- 31 SELECT regexp_position('I have 23 apples, 5 pears and 13 oranges','\b\d+\b',12,3);-- -1 regexp_replace(string
配置项 参考值 作用 merge_tree.max_replicated_merges_with_ttl_in_queue CPU核数一半 在ReplicatedMergeTree队列中允许同时使用TTL合并部件的任务数。
= env.addSource(new SimpleStringGenerator()); messageStream.addSink(new FlinkKafkaProducer<>(paraTool.get("topic"), new
> listBootstrapScriptsActionStages = new ArrayList<>(); listBootstrapScriptsActionStages.add(BootstrapScript.ActionStagesEnum.fromValue
= env.addSource(new SimpleStringGenerator()); messageStream.addSink(new FlinkKafkaProducer010<>(paraTool.get("topic"), new
= env.addSource(new SimpleStringGenerator()); messageStream.addSink(new FlinkKafkaProducer<>(paraTool.get("topic"), new
new Consumer(); consumerThread.init(this.kafkaProperties); consumerThread.start(); LOG.info("Start to consume messages
参考信息 表2 “安全级别”和“Facility”字段数值编码 安全级别 Facility 数值编码 Emergency kernel messages 0 Alert user-level messages 1 Critical mail system 2 Error system
ZooKeeper digestZk = new ZooKeeper("127.0.0.1:2181", 60000, null); LOG.info("digest directory:{}", digestZk.getChildren("/", null
ZooKeeper digestZk = new ZooKeeper("127.0.0.1:2181", 60000, null); LOG.info("digest directory:{}", digestZk.getChildren("/", null
(com.huawei.bigdata.iotdb.Producer) [2022-01-15 15:13:04,691] INFO The Producer have send 200 messages.
ZooKeeper digestZk = new ZooKeeper("127.0.0.1:2181", 60000, null); LOG.info("digest directory:{}", digestZk.getChildren("/", null
compiling statement: FAILED: HiveAccessControlException Permission denied: Principal [name=hive, type=USER] does not have following privileges
ZooKeeper digestZk = new ZooKeeper("127.0.0.1:2181", 60000, null); LOG.info("digest directory:{}", digestZk.getChildren("/", null
privileges; 图4 为数据库用户赋权 为已有MRS集群创建RDS数据连接 该步骤指导用户为当前已有的MRS集群创建RDS数据连接。
AS per_package FROM shipping; Query failed: Division by zero 使用TRY和COALESCE返回默认值: SELECT COALESCE(TRY(total_cost/packages),0) AS per_package
图1 查看任务详情 图2 任务资源使用情况 图3 任务Stages划分 表3 Stages监控信息 监控项 含义 SCHEDULED TIME SKEW 代表当前Stage节点并发任务被调度的时间 CPU TIME SKEW 可以判断是否存在Stage阶段并发任务是否存在计算倾斜