[ https://issues.apache.org/jira/browse/HAWQ-947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Biao Wu updated HAWQ-947: ------------------------- Affects Version/s: 2.0.1.0-incubating > set work_mem cannot work > ------------------------ > > Key: HAWQ-947 > URL: https://issues.apache.org/jira/browse/HAWQ-947 > Project: Apache HAWQ > Issue Type: Bug > Components: Core > Affects Versions: 2.0.1.0-incubating > Reporter: Biao Wu > Assignee: Lei Chang > > HAWQ version is 2.0.1.0 build dev. > EXPLAIN ANALYZE: > Work_mem: 9554K bytes max, 63834K bytes wanted。 > then set work_mem to '512MB',but not work > {code:sql} > test=# EXPLAIN ANALYZE SELECT count(DISTINCT item_sku_id) > test-# FROM gdm_m03_item_sku_da > test-# WHERE item_origin ='中国大陆'; > > > QUERY PLAN > -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- > -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- > Aggregate (cost=54177150.69..54177150.70 rows=1 width=8) > Rows out: Avg 1.0 rows x 1 workers. > Max/Last(seg-1:BJHC-HEBE-9014.hadoop.jd.local/seg-1:BJHC-HEBE-9014.hadoop.jd.local) > 1/1 rows with 532498/532498 ms to end, start offset by 201/201 ms. > -> Gather Motion 306:1 (slice2; segments: 306) > (cost=54177147.60..54177150.68 rows=1 width=8) > Rows out: Avg 306.0 rows x 1 workers at destination. > Max/Last(seg-1:BJHC-HEBE-9014.hadoop.jd.local/seg-1:BJHC-HEBE-9014.hadoop.jd.local) > 306/306 rows with 529394/529394 ms to first row, 532498/532498 ms to end, > start offset b > y 201/201 ms. > -> Aggregate (cost=54177147.60..54177147.61 rows=1 width=8) > Rows out: Avg 1.0 rows x 306 workers. > Max/Last(seg305:BJHC-HEBE-9031.hadoop.jd.local/seg258:BJHC-HEBE-9029.hadoop.jd.local) > 1/1 rows with 530367/532274 ms to end, start offset by 396/246 ms. > Executor memory: 9554K bytes avg, 9554K bytes max > (seg305:BJHC-HEBE-9031.hadoop.jd.local). > Work_mem used: 9554K bytes avg, 9554K bytes max > (seg305:BJHC-HEBE-9031.hadoop.jd.local). > Work_mem wanted: 63695K bytes avg, 63834K bytes max > (seg296:BJHC-HEBE-9031.hadoop.jd.local) to lessen workfile I/O affecting 306 > workers. > -> Redistribute Motion 306:306 (slice1; segments: 306) > (cost=0.00..53550018.97 rows=819776 width=11) > Hash Key: gdm_m03_item_sku_da.item_sku_id > Rows out: Avg 820083.0 rows x 306 workers at > destination. > Max/Last(seg296:BJHC-HEBE-9031.hadoop.jd.local/seg20:BJHC-HEBE-9016.hadoop.jd.local) > 821880/818660 rows with 769/771 ms to first row, 524681/525063 ms to e > nd, start offset by 352/307 ms. > -> Append-only Scan on gdm_m03_item_sku_da > (cost=0.00..48532990.00 rows=819776 width=11) > Filter: item_origin::text = '中国大陆'::text > Rows out: Avg 820083.0 rows x 306 workers. > Max/Last(seg46:BJHC-HEBE-9017.hadoop.jd.local/seg5:BJHC-HEBE-9015.hadoop.jd.local) > 893390/810582 rows with 28/127 ms to first row, 73062/526318 ms to end, > start off > set by 354/458 ms. > Slice statistics: > (slice0) Executor memory: 1670K bytes. > (slice1) Executor memory: 3578K bytes avg x 306 workers, 4711K bytes > max (seg172:BJHC-HEBE-9024.hadoop.jd.local). > (slice2) * Executor memory: 10056K bytes avg x 306 workers, 10056K bytes > max (seg305:BJHC-HEBE-9031.hadoop.jd.local). Work_mem: 9554K bytes max, > 63834K bytes wanted. > Statement statistics: > Memory used: 262144K bytes > Memory wanted: 64233K bytes > Settings: default_hash_table_bucket_number=6 > Dispatcher statistics: > executors used(total/cached/new connection): (612/0/612); dispatcher > time(total/connection/dispatch data): (489.036 ms/192.741 ms/293.357 ms). > dispatch data time(max/min/avg): (37.798 ms/0.011 ms/3.504 ms); consume > executor data time(max/min/avg): (0.016 ms/0.002 ms/0.005 ms); free executor > time(max/min/avg): (0.000 ms/0.000 ms/0.000 ms). > Data locality statistics: > data locality ratio: 0.864; virtual segment number: 306; different host > number: 17; virtual segment number per host(avg/min/max): (18/18/18); segment > size(avg/min/max): (3435087582.693 B/3391891296 B/3489660928 B); segment size > with > penalty(avg/min/max): (3439751300.235 B/3422552064 B/3489660928 B); > continuity(avg/min/max): (0.630/0.118/1.000); DFS metadatacache: 21.704 ms; > resource allocation: 1.773 ms; datalocality calculation: 51.252 ms. > Total runtime: 532774.799 ms > (29 rows) > Time: 532783.403 ms > test=# show Work_mem; > work_mem > ---------- > 512MB > (1 row) > {code} > {code:title=hawq-site.xml} > <configuration> > <property> > <name>hawq_master_address_host</name> > <value>BJHC-HEBE-9014.hadoop.jd.local</value> > <description>The host name of hawq master.</description> > </property> > <property> > <name>hawq_master_address_port</name> > <value>5432</value> > <description>The port of hawq master.</description> > </property> > <property> > <name>hawq_standby_address_host</name> > <value>none</value> > <description>The host name of hawq standby > master.</description> > </property> > <property> > <name>hawq_segment_address_port</name> > <value>40000</value> > <description>The port of hawq segment.</description> > </property> > <property> > <name>hawq_dfs_url</name> > <value>adhoc/user/hawq_default</value> > <description>URL for accessing HDFS.</description> > </property> > <property> > <name>hawq_master_directory</name> > <value>/data0/hawq/hawq-data-directory/masterdd</value> > <description>The directory of hawq master.</description> > </property> > <property> > <name>hawq_segment_directory</name> > <value>/data0/hawq/hawq-data-directory/segmentdd</value> > <description>The directory of hawq segment.</description> > </property> > <property> > <name>hawq_master_temp_directory</name> > <value>/data0/hawq/tmp</value> > <description>The temporary directory reserved for hawq > master.</description> > </property> > <property> > <name>hawq_segment_temp_directory</name> > <value>/data0/hawq/tmp</value> > <description>The temporary directory reserved for hawq > segment.</description> > </property> > <property> > <name>hawq_global_rm_type</name> > <value>none</value> > <description>The resource manager type to start for > allocating resource. > 'none' means hawq resource manager > exclusively uses whole > cluster; 'yarn' means hawq resource > manager contacts YARN > resource manager to negotiate resource. > </description> > </property> > <property> > <name>hawq_rm_memory_limit_perseg</name> > <value>48GB</value> > <description>The limit of memory usage in a hawq segment when > hawq_global_rm_type is set 'none'. > </description> > </property> > <property> > <name>hawq_rm_nvcore_limit_perseg</name> > <value>16</value> > <description>The limit of virtual core usage in a hawq > segment when > hawq_global_rm_type is set 'none'. > </description> > </property> > <property> > <name>hawq_rm_stmt_vseg_memory</name> > <value>256mb</value> > </property> > <property> > <name>hawq_re_cpu_enable</name> > <value>false</value> > <description>The control to enable/disable CPU resource > enforcement.</description> > </property> > <property> > <name>hawq_re_cgroup_mount_point</name> > <value>/sys/fs/cgroup</value> > <description>The mount point of CGroup file system for > resource enforcement. > For example, /sys/fs/cgroup/cpu/hawq > for CPU sub-system. > </description> > </property> > <property> > <name>hawq_re_cgroup_hierarchy_name</name> > <value>hawq</value> > <description>The name of the hierarchy to accomodate CGroup > directories/files for resource enforcement. > For example, /sys/fs/cgroup/cpu/hawq > for CPU sub-system. > </description> > </property> > <property> > <name>default_hash_table_bucket_number</name> > <value>6</value> > </property> > <property> > <name>log_min_error_statement</name> > <value>DEBUG5</value> > </property> > <property> > <name>hawq_rm_nvseg_perquery_limit</name> > <value>512</value> > </property> > <property> > <name>hawq_rm_nvseg_perquery_perseg_limit</name> > <value>18</value> > </property> > <property> > <name>shared_buffers</name> > <value>256MB</value> > </property> > </configuration> > {code} > Total segment instance count from config file = 17 > Thanks -- This message was sent by Atlassian JIRA (v6.3.4#6332)