ame=RS-10-4-1024k, Schema=[ECSchema=[Codec=rs, numDataUnits=10, numParityUnits=4]], CellSize=1048576, Id=5], State=DISABLED ErasureCodingPolicy=[Name=RS-3-2-1024k, Schema=[ECSchema=[Codec=rs, numDataUnits=3 ErasureCodingPolicy=[Name=RS-6-3-1024k, Schema=[ECSchema=[Codec=rs, numDataUnits=6, numParityUnits=3]], CellSize=1048576, Id=1], State=ENABLED ErasureCodingPolicy=[Name=RS-LEGACY-6-3-1024k, Schem Schema=[ECSchema=[Codec=rs-legacy, numDataUnits=6, numParityUnits=3]], CellSize=1048576, Id=3], State=DISABLED ErasureCodingPolicy=[Name=XOR-2-1-1024k, Schema=[ECSchema=[Codec=xor, numDataUnits=2, numParityUnits=1]]

Target DNs sending ICR EC Replication Config ➢ Format: CODEC-DATA-PARITY-CHUNKSIZE ○ RS-3-2-1024K ○ RS-6-3-1024K ○ RS-10-4-1024K ○ XOR-3-2-1024K ○ XOR-6-3-1024K ○ XOR-10-4-1024K Enabling at Cluster should present at OM service. ozone.server.default.replication RS-X-Y-1024k ozone.server.default.replication.type EC bucket create --type EC -- replication rs-6-3-1024k ozone sh bucket set-replication-config --type EC --replication rs-6-3-1024k Enabling at Key Level EC ➢ Key Creation time:

Set管理 的Pod。 $ kubectl create -f frontend.yaml replicaset "frontend" created $ kubectl describe rs/frontend Name: frontend Namespace: default Selector: tier=frontend,tier in (frontend) 将此清单保存为 hpa-rs.yaml 并将其提交到Kubernetes集群，这样就会创建⼀个HPA，根据Pod副本的CPU使⽤率⾃动 调整⽬标ReplicaSet。 kubectl create -f hpa-rs.yaml 或者，您可以使⽤ kubectl autoscale 命令来完成相同的操作（并且更容易！） kubectl autoscale rs frontend ReplicaSet的替代⽅案 编者按：拓展阅读：http://blog.csdn.net/WaltonWang/article/details/77461697 要查看Deployment创建的ReplicaSet（ rs ），可运⾏ kubectl get rs ： NAME DESIRED CURRENT READY AGE nginx-deployment-2035384211

3-replica 2 33% EC RS(6,3) 3 67% EC RS(10, 4) 4 71% EC RS(3,2) 2 60% 以计算为代价，满⾜数据可靠性的同时， 降低数据存储成本 数据可靠性 vs. 存储效率 7 Ozone条带纠删码 I. 物理块：每个DN磁盘上的数据块，默认256MB II. 逻辑EC块：满⾜EC策略的⼀个⽤户数据块。例如RS-3-2，⼀个逻辑块3*256MB⼤⼩ 1MB Chunk6 1MB Parity1 1MB Parity2 1MB 条带1 条带2 0 11 Ozone⽀持的纠删码策略 I. 内建⽀持的策略 I. RS-3-2-1024K II. RS-6-3-1024K III.XOR-2-1-1024K II. 可定制新的策略 III.策略设置⽀持 I. 全局策略设置 II. 桶级别策略设置 III.对象/⽂件级别策略设置

个集群的高可用性。 17 www.h3c.com Confidential 秘密 17 17 K8s基本概念和术语介绍（RC） RC Replication Controller（副本管理器）和RS（Replica Set）： RC定义了一个期望的场景，即声明某种Pod的副本数量在任意时刻都符合某个预期值。RC包含如下几部分： Pod期待的副本数（replicas） 用于筛选目标Pod的Label K8s基本概念和术语介绍（Deployment） Deployment（部署）： 部署是一个比RS（Replica Set）应用模式更广的API对象，可以是创建一个新的服务，更新一个新的服务，也可以是 滚动升级一个服务。滚动升级一个服务，实际是创建一个新的RS，然后逐渐将新RS中副本数增加到理想状态，将旧RS中 的副本数减小到0的复合操作；这样一个复合操作用一个RS是不太好描述的，所以用一个更通用的Deployment来描述。

1-replica 0 100% 3-replica 2 33% EC RS(6,3) 3 67% EC RS(10, 4) 4 71% EC RS(3,2) 2 60% 以计算为代价，在不降低数据可靠性的同 时，降低数据存储成本 数据可靠性 vs. 存储效率 纠删码策略 • 内建⽀持的策略 • RS-3-2-1024K • RS-6-3-1024K • XOR-2-1-1024K • 可定制新的策略

(Statement stmt = conn.createStatement()) { try (ResultSet rs = st.executeQuery("show databases")) { while (rs.next()) { System.out.println(rs.getString(1)); } } } } } } 14 Chapter 3. What’s Next (Statement stmt = conn.createStatement()) { try (ResultSet rs = st.executeQuery("show databases")) { while (rs.next()) { System.out.println(rs.getString(1)); } } } } } } 3.2 Deploying Kyuubi In String trinoUser = "default"; String trinoPassword = null; Connection connection = null; ResultSet rs = null; try { // Create the connection using the JDBC URL connection = DriverManager.getConnection("jdbc:trino://"

(Statement stmt = conn.createStatement()) { try (ResultSet rs = st.executeQuery("show databases")) { while (rs.next()) { System.out.println(rs.getString(1)); } } } } } } 14 Chapter 3. What’s Next (Statement stmt = conn.createStatement()) { try (ResultSet rs = st.executeQuery("show databases")) { while (rs.next()) { System.out.println(rs.getString(1)); } } } } } } 3.2 Deploying Kyuubi In String trinoUser = "default"; String trinoPassword = null; Connection connection = null; ResultSet rs = null; try { // Create the connection using the JDBC URL connection = DriverManager.getConnection("jdbc:trino://"

(Statement stmt = conn.createStatement()) { try (ResultSet rs = st.executeQuery("show databases")) { while (rs.next()) { System.out.println(rs.getString(1)); } } } } } } 14 Chapter 3. What’s Next (Statement stmt = conn.createStatement()) { try (ResultSet rs = st.executeQuery("show databases")) { while (rs.next()) { System.out.println(rs.getString(1)); } } } } } } 3.2 Deploying Kyuubi In String trinoUser = "default"; String trinoPassword = null; Connection connection = null; ResultSet rs = null; try { // Create the connection using the JDBC URL connection = DriverManager.getConnection("jdbc:trino://"

(Statement stmt = conn.createStatement()) { try (ResultSet rs = st.executeQuery("show databases")) { while (rs.next()) { System.out.println(rs.getString(1)); } } } } } } 14 Chapter 3. What’s Next (Statement stmt = conn.createStatement()) { try (ResultSet rs = st.executeQuery("show databases")) { while (rs.next()) { System.out.println(rs.getString(1)); } } } } } } 3.2 Deploying Kyuubi In String trinoUser = "default"; String trinoPassword = null; Connection connection = null; ResultSet rs = null; try { // Create the connection using the JDBC URL connection = DriverManager.getConnection("jdbc:trino://"