数据同步方式 Ø gpfdist+外部表 ： UMGW大表 Ø db_sync同步程序 ： 底层库 + 同步逻辑 + Django界面 Ø 临时同步需求： datax , copy 29 Greenplum运维体系 数据库数据传输与同步-db_sync 30 Greenplum运维体系 数据库数据传输与同步-db_sync 31 Greenplum运维体系 Greenplum任务调度

The gpscp utility has been renamed gpsync and now takes a new -a option, which causes gpsync to sync source and target directories in archival mode. The pg_resetxlog utility has been renamed to pg_resetwal this option to reduce the information written to the log file. -S (use O_SYNC) Opens the file for synchronous I/O with the O_SYNC flag. Any writes to the resulting file descriptor block gpfdist until the segments’ file system location. 2. Use gpssh-exkeys to ensure that the segment hosts can SSH and remote sync to each other without a password prompt. Important During the online data replication process,

index creation on heap tables could fail due to out-of- order transaction IDs resulting from sync scans. Sync scans are now disallowed when building bitmap indexes. 32746 : Resolves an issue where too using pg_ctl. This was due to the mirror segment port number listed in postgresql.conf being out of sync with the number listed in the gp_segment_configuration table. Data Flow 32209 : Creates gpload6 field in gpstate -s output for primary segments now has just two valid values: Synchronized or Not in Sync. Greenplum 6.18.0 introduces a new Query Optimizer server configuration parameter, optimizer_xform_bind_threshold

index creation on heap tables could fail due to out-of- order transaction IDs resulting from sync scans. Sync scans are now disallowed when building bitmap indexes. 32746 : Resolves an issue where too using pg_ctl. This was due to the mirror segment port number listed in postgresql.conf being out of sync with the number listed in the gp_segment_configuration table. Data Flow 32209 : Creates gpload6 field in gpstate -s output for primary segments now has just two valid values: Synchronized or Not in Sync. Greenplum 6.18.0 introduces a new Query Optimizer server configuration parameter, optimizer_xform_bind_threshold

using pg_ctl. This was due to the mirror segment port number listed in postgresql.conf being out of sync with the number listed in the gp_segment_configuration table. Data Flow VMware Tanzu Greenplum field in gpstate -s output for primary segments now has just two valid values: Synchronized or Not in Sync. Greenplum 6.18.0 introduces a new Query Optimizer server configuration parameter, optimizer_xform_bind_threshold and then restart, all PXF server instances in the cluster. See Restarting PXF. The pxf [cluster] sync command now recognizes a [-d | --delete] option. When specified, PXF deletes files on the remote

using pg_ctl. This was due to the mirror segment port number listed in postgresql.conf being out of sync with the number listed in the gp_segment_configuration table. Data Flow 32209 Creates gpload6 field in gpstate -s output for primary segments now has just two valid values: Synchronized or Not in Sync. Greenplum 6.18.0 introduces a new Query Optimizer server configuration parameter, optimizer_xform_bind_threshold and then restart, all PXF server instances in the cluster. See Restarting PXF. The pxf [cluster] sync command now recognizes a [-d | --delete] option. When specified, PXF deletes files on the remote

using pg_ctl. This was due to the mirror segment port number listed in postgresql.conf being out of sync with the number listed in the gp_segment_configuration table. Data Flow VMware Tanzu Greenplum field in gpstate -s output for primary segments now has just two valid values: Synchronized or Not in Sync. Greenplum 6.18.0 introduces a new Query Optimizer server configuration parameter, optimizer_xform_bind_threshold and then restart, all PXF server instances in the cluster. See Restarting PXF. The pxf [cluster] sync command now recognizes a [-d | --delete] option. When specified, PXF deletes files on the remote

using pg_ctl. This was due to the mirror segment port number listed in postgresql.conf being out of sync with the number listed in the gp_segment_configuration table. Data Flow 32209 : Creates gpload6 field in gpstate -s output for primary segments now has just two valid values: Synchronized or Not in Sync. Greenplum 6.18.0 introduces a new Query Optimizer server configuration parameter, optimizer_xform_bind_threshold and then restart, all PXF server instances in the cluster. See Restarting PXF. The pxf [cluster] sync command now recognizes a [-d | --delete] option. When specified, PXF deletes files on the remote

field in gpstate -s output for primary segments now has just two valid values: Synchronized or Not in Sync. Greenplum 6.18.0 introduces a new Query Optimizer server configuration parameter, optimizer_xform_bind_threshold and then restart, all PXF server instances in the cluster. See Restarting PXF. The pxf [cluster] sync command now recognizes a [-d | --delete] option. When specified, PXF deletes files on the remote ExecutionError: 'non-zero rc: 255' occured. This problem occurred because gpstart was attempting to check and sync the filespace or tablespace on the unavailable standby master host. gpstart was modified to skip

field in gpstate -s output for primary segments now has just two valid values: Synchronized or Not in Sync. Greenplum 6.18.0 introduces a new Query Optimizer server configuration parameter, optimizer_xform_bind_threshold and then restart, all PXF server instances in the cluster. See Restarting PXF. The pxf [cluster] sync command now recognizes a [-d | --delete] option. When specified, PXF deletes files on the remote ExecutionError: 'non-zero rc: 255' occured. This problem occurred because gpstart was attempting to check and sync the filespace or tablespace on the unavailable standby master host. gpstart was modified to skip