内部新一代分布式处理框架，于12/13年发表 相关论文，奠定下一代分布式 NewSQL的理论和工程 实践基石。PingCAP以此为基础打造了TiDB & TiKV HBase Map Reduce HDFS TiDB TiKV NewSQL | TiDB Google Spanner / F1 - The First NewSQL ● 全球级别分布式 / 跨数据中心复制 ○ Paxos

'/path/in/hdfs'. Therefore, if you need to export a table named test, perform the following steps: 1. Run the following SQL statement in Hive: CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS data is successfully exported to the HDFS system. 2. Export the parquet files to the local file system using the hdfs dfs -get command: 767 hdfs dfs -get /path/in/hdfs /path/in/local After the export is is complete, if you need to delete the exported parquet files in HDFS, you can directly delete the temporary table (temp): DROP TABLE temp; 3. The parquet files exported from Hive might not have the

'/path/in/hdfs'. Therefore, if you need to export a table named test, perform the following steps: 1. Run the following SQL statement in Hive: CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS data is successfully exported to the HDFS system. 2. Export the parquet files to the local file system using the hdfs dfs -get command: 780 hdfs dfs -get /path/in/hdfs /path/in/local After the export is is complete, if you need to delete the exported parquet files in HDFS, you can directly delete the temporary table (temp): DROP TABLE temp; 3. The parquet files exported from Hive might not have the

'/path/in/hdfs'. Therefore, if you need to export a table named test, perform the following steps: 1. Run the following SQL statement in Hive: CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS data is successfully exported to the HDFS system. 2. Export the parquet files to the local file system using the hdfs dfs -get command: hdfs dfs -get /path/in/hdfs /path/in/local After the export is is complete, if you need to delete the exported parquet files in HDFS, you can directly delete the temporary table (temp): DROP TABLE temp; 3. The parquet files exported from Hive might not have the .parquet

'/path/in/hdfs'. Therefore, if you need to export a table named test, perform the following steps: 1. Run the following SQL statement in Hive: CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS data is successfully exported to the HDFS system. 2. Export the parquet files to the local file system using the hdfs dfs -get command: hdfs dfs -get /path/in/hdfs /path/in/local After the export is is complete, if you need to delete the exported parquet files in HDFS, you can directly delete the temporary table (temp): DROP TABLE temp; 3. The parquet files exported from Hive might not have the .parquet

PARQUET LOCATION '/path/in/hdfs' 的形式将表数据导出到 Parquet 文 件中。因此，如果你需要导出一张名叫 test 的表，请执行以下步骤： 1. 在 Hive 中执行如下 SQL 语句： 606 CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS SELECT * FROM test; test; 执行上述语句后，表数据就成功导出到 HDFS 系统里。 2. 使用 hdfs dfs -get 命令将 Parquet 文件导出到本地： hdfs dfs -get /path/in/hdfs /path/in/local 完成导出后，如果你需要将 HDFS 里导出的 Parquet 文件删除，可以直接将这个临时表 (temp) 删掉： DROP TABLE temp; 3. 从 Hive backup.hadoop 14.5.2.27.1 home • 指定 HDFS shell 命令的位置，并且允许 TiKV 找到该 shell 命令。该配置项与环境变量 $HADOOP_HOME 有相同 的效果。 • 默认值："" 14.5.2.27.2 linux-user • 指定 TiKV 运行 HDFS shell 命令的 Linux 用户。 • 如果未设置该配置项，TiKV

'/path/in/hdfs'. Therefore, if you need to export a table named test, perform the following steps: 1. Run the following SQL statement in Hive: CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS data is successfully exported to the HDFS system. 2. Export the parquet files to the local file system using the hdfs dfs -get command: hdfs dfs -get /path/in/hdfs /path/in/local After the export is is complete, if you need to delete the exported parquet files in HDFS, you can directly delete the temporary table (temp): DROP TABLE temp; 3. The parquet files exported from Hive might not have the .parquet

PARQUET LOCATION '/path/in/hdfs' 的形式将表数据导出到 Parquet 文 件中。因此，如果你需要导出一张名叫 test 的表，请执行以下步骤： 1. 在 Hive 中执行如下 SQL 语句： CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS SELECT * FROM test; 执行上述语句后，表数据就成功导出到 执行上述语句后，表数据就成功导出到 HDFS 系统里。 2. 使用 hdfs dfs -get 命令将 Parquet 文件导出到本地： hdfs dfs -get /path/in/hdfs /path/in/local 完成导出后，如果你需要将 HDFS 里导出的 Parquet 文件删除，可以直接将这个临时表 (temp) 删掉： DROP TABLE temp; 3. 从 Hive backup.hadoop 14.5.2.27.1 home • 指定 HDFS shell 命令的位置，并且允许 TiKV 找到该 shell 命令。该配置项与环境变量 $HADOOP_HOME 有相同 的效果。 • 默认值："" 14.5.2.27.2 linux-user • 指定 TiKV 运行 HDFS shell 命令的 Linux 用户。 • 如果未设置该配置项，TiKV

'/path/in/hdfs'. Therefore, if you need to export a table named test, perform the following steps: 1. Run the following SQL statement in Hive: CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS data is successfully exported to the HDFS system. 2. Export the parquet files to the local file system using the hdfs dfs -get command: hdfs dfs -get /path/in/hdfs /path/in/local After the export is is complete, if you need to delete the exported parquet files in HDFS, you can directly delete the temporary table (temp): DROP TABLE temp; 3. The parquet files exported from Hive might not have the .parquet

'/path/in/hdfs'. Therefore, if you need to export a table named test, perform the following steps: 1. Run the following SQL statement in Hive: CREATE TABLE temp STORED AS PARQUET LOCATION '/path/in/hdfs' AS data is successfully exported to the HDFS system. 2. Export the parquet files to the local file system using the hdfs dfs -get command: hdfs dfs -get /path/in/hdfs /path/in/local After the export is is complete, if you need to delete the exported parquet files in HDFS, you can directly delete the temporary table (temp): DROP TABLE temp; 3. The parquet files exported from Hive might not have the .parquet