O le faaliliuga o le tusiga na saunia faapitoa mo tamaiti aoga o le vasega .
ose fa'amaumauga tu'ufa'atasi puna matala. Ose si'osi'omaga lelei lea e mafai ai e le faitau selau o tagata su'esu'e ona vave fesiligia fa'amatalaga au'ili'ili, tusa lava pe fia sefulu piliona o fa'amaumauga fou e fa'aulu i le aso. O tau o galuega tetele mo le lagolagoina o sea faiga e mafai ona maualuga i le $100 i le tausaga, ma atonu o le afa e faalagolago i le faʻaaogaina. I se tasi taimi, o le ClickHouse faʻapipiʻi mai Yandex Metrics o loʻo i ai 10 trillion faamaumauga. I le faaopoopo atu ia Yandex, ua maua foi e ClickHouse le manuia ma Bloomberg ma Cloudflare.
Lua tausaga talu ai sa ou faaaluina faʻamaumauga e faʻaaoga ai le masini e tasi, ma na avea free database software ua ou vaai i ai. Talu mai lena taimi, e leʻi taofia e le au atinaʻe le faʻaopoopoina o foliga, e aofia ai le lagolago mo Kafka, HDFS ma le ZStandard compression. I le tausaga talu ai na latou faʻaopoopoina le lagolago mo auala faʻapipiʻi faʻamalosi, ma coding ua mafai. Pe a faʻapipiʻi faʻamaumauga faʻasologa o taimi, e mafai ona faʻapipiʻi lelei fua faʻatatau i le faʻaogaina o le delta encoding, ae mo faʻatau e sili atu le faʻaogaina o le delta-by-delta encoding. O le faʻamalosi lelei ua avea ma ki i le faʻatinoga a ClickHouse.
ClickHouse e aofia ai le 170 afe laina o le C++ code, e le aofia ai faletusi lona tolu, ma o se tasi lea o faʻamaumauga faʻamaumauga tuʻufaʻatasia laʻititi. I le faʻatusatusaina, e le lagolagoina e le SQLite le tufatufaina atu ma e aofia ai le 235 afe laina o le code C. E pei o lenei tusitusiga, 207 inisinia ua saofagā i le ClickHouse, ma o le malosi o tautinoga ua faʻateleina talu ai nei.
Ia Mati 2017, na amata ai ona faʻatautaia le ClickHouse o se auala faigofie e siaki ai le atinaʻe. Na latou talepeina foʻi le faila faʻamaumauga monolithic i se faʻasologa o faila faila a Markdown. O fa'afitauli ma foliga o lo'o su'esu'eina e ala i le GitHub, ma i se tulaga lautele ua sili atu ona faigofie le polokalama i nai tausaga talu ai.
I lenei tusiga, o le a ou vaʻavaʻai i le faʻatinoga o le ClickHouse cluster i luga o le AWS EC2 faʻaaogaina 36-core processors ma NVMe storage.
FUAFUAGA: I le vaiaso talu ona faʻasalalau muamua lenei pou, na ou toe faʻataʻitaʻiina le suʻega ma se faʻaleleia atili o faʻatulagaga ma maua ai ni faʻaiʻuga sili atu. Ua toe faafou lenei pou ina ia atagia ai nei suiga.
Tatalaina le AWS EC2 Cluster
O le a ou faʻaaogaina tolu c5d.9xlarge EC2 taimi mo lenei pou. O i latou taʻitasi o loʻo i ai 36 virtual CPUs, 72 GB o le RAM, 900 GB o le NVMe SSD teuina ma lagolagoina le 10 Gigabit network. Latou te tau $1,962/itula taʻitasi i le eu-sisifo-1 itulagi pe a taʻavale pe a manaʻomia. O le a ou faʻaaogaina le Ubuntu Server 16.04 LTS e fai ma faiga faʻaoga.
O le firewall e faʻapipiʻiina ina ia mafai e masini taʻitasi ona fesoʻotaʻi ma le tasi ma le isi e aunoa ma ni faʻatapulaʻaina, ma naʻo laʻu tuatusi IPv4 o loʻo paʻepaʻe e le SSH i le fuifui.
NVMe ta'avale i le tulaga sauni galue
Mo le ClickHouse e galue, o le a ou fatuina se faila faila i le EXT4 format i luga o le NVMe drive i luga o sapalai taʻitasi.
$ sudo mkfs -t ext4 /dev/nvme1n1
$ sudo mkdir /ch
$ sudo mount /dev/nvme1n1 /chA maeʻa ona faʻatulagaina mea uma, e mafai ona e vaʻai i le mauga ma le 783 GB avanoa avanoa i luga o faiga taʻitasi.
$ lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 87.9M 1 loop /snap/core/5742
loop1 7:1 0 16.5M 1 loop /snap/amazon-ssm-agent/784
nvme0n1 259:1 0 8G 0 disk
└─nvme0n1p1 259:2 0 8G 0 part /
nvme1n1 259:0 0 838.2G 0 disk /ch$ df -hFilesystem Size Used Avail Use% Mounted on
udev 35G 0 35G 0% /dev
tmpfs 6.9G 8.8M 6.9G 1% /run
/dev/nvme0n1p1 7.7G 967M 6.8G 13% /
tmpfs 35G 0 35G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 35G 0 35G 0% /sys/fs/cgroup
/dev/loop0 88M 88M 0 100% /snap/core/5742
/dev/loop1 17M 17M 0 100% /snap/amazon-ssm-agent/784
tmpfs 6.9G 0 6.9G 0% /run/user/1000
/dev/nvme1n1 825G 73M 783G 1% /chO le fa'amaumauga o le a ou fa'aogaina i lenei su'ega ose fa'amaumauga tu'ufa'atasi na ou gaosia mai le 1.1 piliona ta'avale taxi na ave i le Aai o Niu Ioka mo le ono tausaga. I luga o le blog fa'amatalaga pe na faapefea ona ou aoina lenei seti fa'amaumauga. O loʻo teuina i le AWS S3, o lea o le a ou faʻapipiʻiina le AWS CLI ma loʻu avanoa ma ki faalilolilo.
$ sudo apt update
$ sudo apt install awscli
$ aws configureO le a ou setiina le fa'atapula'a o talosaga fa'atasi a le kalani i le 100 ina ia vave ona la'u faila nai lo tulaga fa'aletonu.
$ aws configure set
default.s3.max_concurrent_requests
100O le a ou sii maia le faamaumauga o taʻavale taxi mai le AWS S3 ma teu i luga o le NVMe drive i luga o le server muamua. Ole fa'amaumauga lenei e ~104GB ile GZIP-compressed CSV format.
$ sudo mkdir -p /ch/csv
$ sudo chown -R ubuntu /ch/csv
$ aws s3 sync s3://<bucket>/csv /ch/csvFa'apipi'i ClickHouse
O le a ou faʻapipiʻiina le OpenJDK tufatufaga mo Java 8 e pei ona manaʻomia e faʻatautaia ai Apache ZooKeeper, lea e manaʻomia mo le faʻapipiʻiina o le ClickHouse i luga o masini uma e tolu.
$ sudo apt update
$ sudo apt install
openjdk-8-jre
openjdk-8-jdk-headless
Ona ou setiina lea o le fesuiaiga o le siosiomaga JAVA_HOME.
$ sudo vi /etc/profile
export JAVA_HOME=/usr
$ source /etc/profileOna ou faʻaogaina lea o le polokalama faʻapipiʻi a le Ubuntu e faʻapipiʻi ai ClickHouse 18.16.1, tilotilo ma ZooKeeper i luga o masini uma e tolu.
$ sudo apt-key adv
--keyserver hkp://keyserver.ubuntu.com:80
--recv E0C56BD4
$ echo "deb http://repo.yandex.ru/clickhouse/deb/stable/ main/" |
sudo tee /etc/apt/sources.list.d/clickhouse.list
$ sudo apt-get update$ sudo apt install
clickhouse-client
clickhouse-server
glances
zookeeperdO le a ou faia se lisi mo ClickHouse ma faia foi nisi faʻatonuga faʻasologa i luga o sapalai uma e tolu.
$ sudo mkdir /ch/clickhouse
$ sudo chown -R clickhouse /ch/clickhouse
$ sudo mkdir -p /etc/clickhouse-server/conf.d
$ sudo vi /etc/clickhouse-server/conf.d/taxis.confO fa'atonuga ia o le a ou fa'aaogaina.
<?xml version="1.0"?>
<yandex>
<listen_host>0.0.0.0</listen_host>
<path>/ch/clickhouse/</path>
<remote_servers>
<perftest_3shards>
<shard>
<replica>
<host>172.30.2.192</host>
<port>9000</port>
</replica>
</shard>
<shard>
<replica>
<host>172.30.2.162</host>
<port>9000</port>
</replica>
</shard>
<shard>
<replica>
<host>172.30.2.36</host>
<port>9000</port>
</replica>
</shard>
</perftest_3shards>
</remote_servers> <zookeeper-servers>
<node>
<host>172.30.2.192</host>
<port>2181</port>
</node>
<node>
<host>172.30.2.162</host>
<port>2181</port>
</node>
<node>
<host>172.30.2.36</host>
<port>2181</port>
</node>
</zookeeper-servers> <macros>
<shard>03</shard>
<replica>01</replica>
</macros>
</yandex>Ona ou faʻatautaia lea o le ZooKeeper ma le ClickHouse server i luga o masini uma e tolu.
$ sudo /etc/init.d/zookeeper start
$ sudo service clickhouse-server startTuuina atu o faʻamaumauga ile ClickHouse
I luga o le server muamua o le a ou fatuina se laulau malaga (trips), lea o le a teuina ai se faʻamaumauga o malaga taʻavale e faʻaaoga ai le masini Log.
$ clickhouse-client --host=0.0.0.0
CREATE TABLE trips (
trip_id UInt32,
vendor_id String,
pickup_datetime DateTime,
dropoff_datetime Nullable(DateTime),
store_and_fwd_flag Nullable(FixedString(1)),
rate_code_id Nullable(UInt8),
pickup_longitude Nullable(Float64),
pickup_latitude Nullable(Float64),
dropoff_longitude Nullable(Float64),
dropoff_latitude Nullable(Float64),
passenger_count Nullable(UInt8),
trip_distance Nullable(Float64),
fare_amount Nullable(Float32),
extra Nullable(Float32),
mta_tax Nullable(Float32),
tip_amount Nullable(Float32),
tolls_amount Nullable(Float32),
ehail_fee Nullable(Float32),
improvement_surcharge Nullable(Float32),
total_amount Nullable(Float32),
payment_type Nullable(String),
trip_type Nullable(UInt8),
pickup Nullable(String),
dropoff Nullable(String),
cab_type Nullable(String),
precipitation Nullable(Int8),
snow_depth Nullable(Int8),
snowfall Nullable(Int8),
max_temperature Nullable(Int8),
min_temperature Nullable(Int8),
average_wind_speed Nullable(Int8),
pickup_nyct2010_gid Nullable(Int8),
pickup_ctlabel Nullable(String),
pickup_borocode Nullable(Int8),
pickup_boroname Nullable(String),
pickup_ct2010 Nullable(String),
pickup_boroct2010 Nullable(String),
pickup_cdeligibil Nullable(FixedString(1)),
pickup_ntacode Nullable(String),
pickup_ntaname Nullable(String),
pickup_puma Nullable(String),
dropoff_nyct2010_gid Nullable(UInt8),
dropoff_ctlabel Nullable(String),
dropoff_borocode Nullable(UInt8),
dropoff_boroname Nullable(String),
dropoff_ct2010 Nullable(String),
dropoff_boroct2010 Nullable(String),
dropoff_cdeligibil Nullable(String),
dropoff_ntacode Nullable(String),
dropoff_ntaname Nullable(String),
dropoff_puma Nullable(String)
) ENGINE = Log;
Ona ou aveese lea ma uta ia faila CSV taitasi i totonu o se laulau malaga (trips). O mea nei na mae'a i le 55 minute ma le 10 sekone. A maeʻa lenei taʻaloga, o le tele o le faʻamaumauga faʻamaumauga o le 134 GB.
$ time (for FILENAME in /ch/csv/trips_x*.csv.gz; do
echo $FILENAME
gunzip -c $FILENAME |
clickhouse-client
--host=0.0.0.0
--query="INSERT INTO trips FORMAT CSV"
done)O le saosaoa fa'aulufale mai e 155 MB o mea e le'i fa'apipi'iina CSV i le sekone. Ou te masalo o lenei mea na mafua ona o se fagu i le GZIP decompression. Atonu e sili atu le vave e tatala uma faila gzipped faʻatasi i le faʻaogaina o xargs ona uta lea o faʻamaumauga e le faʻapipiʻi. O lo'o i lalo se fa'amatalaga o mea na lipotia i le taimi o le fa'aulufaleina mai o le CSV.
$ sudo glancesip-172-30-2-200 (Ubuntu 16.04 64bit / Linux 4.4.0-1072-aws) Uptime: 0:11:42
CPU 8.2% nice: 0.0% LOAD 36-core MEM 9.8% active: 5.20G SWAP 0.0%
user: 6.0% irq: 0.0% 1 min: 2.24 total: 68.7G inactive: 61.0G total: 0
system: 0.9% iowait: 1.3% 5 min: 1.83 used: 6.71G buffers: 66.4M used: 0
idle: 91.8% steal: 0.0% 15 min: 1.01 free: 62.0G cached: 61.6G free: 0
NETWORK Rx/s Tx/s TASKS 370 (507 thr), 2 run, 368 slp, 0 oth sorted automatically by cpu_percent, flat view
ens5 136b 2Kb
lo 343Mb 343Mb CPU% MEM% VIRT RES PID USER NI S TIME+ IOR/s IOW/s Command
100.4 1.5 1.65G 1.06G 9909 ubuntu 0 S 1:01.33 0 0 clickhouse-client --host=0.0.0.0 --query=INSERT INTO trips FORMAT CSV
DISK I/O R/s W/s 85.1 0.0 4.65M 708K 9908 ubuntu 0 R 0:50.60 32M 0 gzip -d -c /ch/csv/trips_xac.csv.gz
loop0 0 0 54.9 5.1 8.14G 3.49G 8091 clickhous 0 S 1:44.23 0 45M /usr/bin/clickhouse-server --config=/etc/clickhouse-server/config.xml
loop1 0 0 4.5 0.0 0 0 319 root 0 S 0:07.50 1K 0 kworker/u72:2
nvme0n1 0 3K 2.3 0.0 91.1M 28.9M 9912 root 0 R 0:01.56 0 0 /usr/bin/python3 /usr/bin/glances
nvme0n1p1 0 3K 0.3 0.0 0 0 960 root -20 S 0:00.10 0 0 kworker/28:1H
nvme1n1 32.1M 495M 0.3 0.0 0 0 1058 root -20 S 0:00.90 0 0 kworker/23:1HO le a ou faʻasaʻoloto avanoa i luga o le NVMe drive e ala i le tapeina o uluai faila CSV aʻo leʻi faʻaauau.
$ sudo rm -fr /ch/csvSu'e ile Pepa Fa'ailoga
O le Log ClickHouse engine o le a teuina faʻamaumauga i se laina-faʻatulagaina faatulagaga. Ina ia vave su'esu'eina fa'amatalaga, ou te fa'aliliuina i le fa'asologa fa'akomupiuta e fa'aaoga ai le afi MergeTree.
$ clickhouse-client --host=0.0.0.0O mea nei na mae'a i le 34 minute ma le 50 sekone. A maeʻa lenei taʻaloga, o le tele o le faʻamaumauga faʻamaumauga o le 237 GB.
CREATE TABLE trips_mergetree
ENGINE = MergeTree(pickup_date, pickup_datetime, 8192)
AS SELECT
trip_id,
CAST(vendor_id AS Enum8('1' = 1,
'2' = 2,
'CMT' = 3,
'VTS' = 4,
'DDS' = 5,
'B02512' = 10,
'B02598' = 11,
'B02617' = 12,
'B02682' = 13,
'B02764' = 14)) AS vendor_id,
toDate(pickup_datetime) AS pickup_date,
ifNull(pickup_datetime, toDateTime(0)) AS pickup_datetime,
toDate(dropoff_datetime) AS dropoff_date,
ifNull(dropoff_datetime, toDateTime(0)) AS dropoff_datetime,
assumeNotNull(store_and_fwd_flag) AS store_and_fwd_flag,
assumeNotNull(rate_code_id) AS rate_code_id,
assumeNotNull(pickup_longitude) AS pickup_longitude,
assumeNotNull(pickup_latitude) AS pickup_latitude,
assumeNotNull(dropoff_longitude) AS dropoff_longitude,
assumeNotNull(dropoff_latitude) AS dropoff_latitude,
assumeNotNull(passenger_count) AS passenger_count,
assumeNotNull(trip_distance) AS trip_distance,
assumeNotNull(fare_amount) AS fare_amount,
assumeNotNull(extra) AS extra,
assumeNotNull(mta_tax) AS mta_tax,
assumeNotNull(tip_amount) AS tip_amount,
assumeNotNull(tolls_amount) AS tolls_amount,
assumeNotNull(ehail_fee) AS ehail_fee,
assumeNotNull(improvement_surcharge) AS improvement_surcharge,
assumeNotNull(total_amount) AS total_amount,
assumeNotNull(payment_type) AS payment_type_,
assumeNotNull(trip_type) AS trip_type,
pickup AS pickup,
pickup AS dropoff,
CAST(assumeNotNull(cab_type)
AS Enum8('yellow' = 1, 'green' = 2))
AS cab_type,
precipitation AS precipitation,
snow_depth AS snow_depth,
snowfall AS snowfall,
max_temperature AS max_temperature,
min_temperature AS min_temperature,
average_wind_speed AS average_wind_speed,
pickup_nyct2010_gid AS pickup_nyct2010_gid,
pickup_ctlabel AS pickup_ctlabel,
pickup_borocode AS pickup_borocode,
pickup_boroname AS pickup_boroname,
pickup_ct2010 AS pickup_ct2010,
pickup_boroct2010 AS pickup_boroct2010,
pickup_cdeligibil AS pickup_cdeligibil,
pickup_ntacode AS pickup_ntacode,
pickup_ntaname AS pickup_ntaname,
pickup_puma AS pickup_puma,
dropoff_nyct2010_gid AS dropoff_nyct2010_gid,
dropoff_ctlabel AS dropoff_ctlabel,
dropoff_borocode AS dropoff_borocode,
dropoff_boroname AS dropoff_boroname,
dropoff_ct2010 AS dropoff_ct2010,
dropoff_boroct2010 AS dropoff_boroct2010,
dropoff_cdeligibil AS dropoff_cdeligibil,
dropoff_ntacode AS dropoff_ntacode,
dropoff_ntaname AS dropoff_ntaname,
dropoff_puma AS dropoff_puma
FROM trips;O le mea lea na foliga mai o le va'aiga na maua i le taimi o le taotoga:
ip-172-30-2-200 (Ubuntu 16.04 64bit / Linux 4.4.0-1072-aws) Uptime: 1:06:09
CPU 10.3% nice: 0.0% LOAD 36-core MEM 16.1% active: 13.3G SWAP 0.0%
user: 7.9% irq: 0.0% 1 min: 1.87 total: 68.7G inactive: 52.8G total: 0
system: 1.6% iowait: 0.8% 5 min: 1.76 used: 11.1G buffers: 71.8M used: 0
idle: 89.7% steal: 0.0% 15 min: 1.95 free: 57.6G cached: 57.2G free: 0
NETWORK Rx/s Tx/s TASKS 367 (523 thr), 1 run, 366 slp, 0 oth sorted automatically by cpu_percent, flat view
ens5 1Kb 8Kb
lo 2Kb 2Kb CPU% MEM% VIRT RES PID USER NI S TIME+ IOR/s IOW/s Command
241.9 12.8 20.7G 8.78G 8091 clickhous 0 S 30:36.73 34M 125M /usr/bin/clickhouse-server --config=/etc/clickhouse-server/config.xml
DISK I/O R/s W/s 2.6 0.0 90.4M 28.3M 9948 root 0 R 1:18.53 0 0 /usr/bin/python3 /usr/bin/glances
loop0 0 0 1.3 0.0 0 0 203 root 0 S 0:09.82 0 0 kswapd0
loop1 0 0 0.3 0.1 315M 61.3M 15701 ubuntu 0 S 0:00.40 0 0 clickhouse-client --host=0.0.0.0
nvme0n1 0 3K 0.3 0.0 0 0 7 root 0 S 0:00.83 0 0 rcu_sched
nvme0n1p1 0 3K 0.0 0.0 0 0 142 root 0 S 0:00.22 0 0 migration/27
nvme1n1 25.8M 330M 0.0 0.0 59.7M 1.79M 2764 ubuntu 0 S 0:00.00 0 0 (sd-pam)I le suega mulimuli, e tele koluma na liua ma toe fa'atatau. Na ou iloa o nisi o nei galuega e le o toe galue e pei ona faʻamoemoeina i lenei faʻamaumauga. Ina ia foia lenei faafitauli, na ou aveesea galuega le talafeagai ma utaina faʻamaumauga e aunoa ma le liua i ni ituaiga sili atu.
Fa'asoaina o fa'amaumauga i luga o le fuifui
O le a ou tufatufaina atu fa'amaumauga i nodes uma e tolu. Ina ia amata, i lalo o le a ou fatuina se laulau i luga o masini uma e tolu.
$ clickhouse-client --host=0.0.0.0CREATE TABLE trips_mergetree_third (
trip_id UInt32,
vendor_id String,
pickup_date Date,
pickup_datetime DateTime,
dropoff_date Date,
dropoff_datetime Nullable(DateTime),
store_and_fwd_flag Nullable(FixedString(1)),
rate_code_id Nullable(UInt8),
pickup_longitude Nullable(Float64),
pickup_latitude Nullable(Float64),
dropoff_longitude Nullable(Float64),
dropoff_latitude Nullable(Float64),
passenger_count Nullable(UInt8),
trip_distance Nullable(Float64),
fare_amount Nullable(Float32),
extra Nullable(Float32),
mta_tax Nullable(Float32),
tip_amount Nullable(Float32),
tolls_amount Nullable(Float32),
ehail_fee Nullable(Float32),
improvement_surcharge Nullable(Float32),
total_amount Nullable(Float32),
payment_type Nullable(String),
trip_type Nullable(UInt8),
pickup Nullable(String),
dropoff Nullable(String),
cab_type Nullable(String),
precipitation Nullable(Int8),
snow_depth Nullable(Int8),
snowfall Nullable(Int8),
max_temperature Nullable(Int8),
min_temperature Nullable(Int8),
average_wind_speed Nullable(Int8),
pickup_nyct2010_gid Nullable(Int8),
pickup_ctlabel Nullable(String),
pickup_borocode Nullable(Int8),
pickup_boroname Nullable(String),
pickup_ct2010 Nullable(String),
pickup_boroct2010 Nullable(String),
pickup_cdeligibil Nullable(FixedString(1)),
pickup_ntacode Nullable(String),
pickup_ntaname Nullable(String),
pickup_puma Nullable(String),
dropoff_nyct2010_gid Nullable(UInt8),
dropoff_ctlabel Nullable(String),
dropoff_borocode Nullable(UInt8),
dropoff_boroname Nullable(String),
dropoff_ct2010 Nullable(String),
dropoff_boroct2010 Nullable(String),
dropoff_cdeligibil Nullable(String),
dropoff_ntacode Nullable(String),
dropoff_ntaname Nullable(String),
dropoff_puma Nullable(String)
) ENGINE = MergeTree(pickup_date, pickup_datetime, 8192);Ona ou faʻamautinoa lea e mafai e le server muamua ona vaʻai i nodes uma e tolu i le fuifui.
SELECT *
FROM system.clusters
WHERE cluster = 'perftest_3shards'
FORMAT Vertical;Row 1:
──────
cluster: perftest_3shards
shard_num: 1
shard_weight: 1
replica_num: 1
host_name: 172.30.2.192
host_address: 172.30.2.192
port: 9000
is_local: 1
user: default
default_database:Row 2:
──────
cluster: perftest_3shards
shard_num: 2
shard_weight: 1
replica_num: 1
host_name: 172.30.2.162
host_address: 172.30.2.162
port: 9000
is_local: 0
user: default
default_database:Row 3:
──────
cluster: perftest_3shards
shard_num: 3
shard_weight: 1
replica_num: 1
host_name: 172.30.2.36
host_address: 172.30.2.36
port: 9000
is_local: 0
user: default
default_database:
Ona ou faʻamalamalamaina lea o se laulau fou i luga o le server muamua e faʻavae i luga o le schema trips_mergetree_third ma fa'aaoga le afi Fa'asoa.
CREATE TABLE trips_mergetree_x3
AS trips_mergetree_third
ENGINE = Distributed(perftest_3shards,
default,
trips_mergetree_third,
rand());Ona ou kopiina lea o faʻamatalaga mai le MergeTree faʻavae laulau i 'auʻaunaga uma e tolu. O mea nei na mae'a i le 34 minute ma le 44 sekone.
INSERT INTO trips_mergetree_x3
SELECT * FROM trips_mergetree;Ina ua maeʻa le taʻaloga i luga, na ou tuʻuina atu i le ClickHouse 15 minute e alu ese ai mai le maualuga o le faʻailoga maualuga. O faʻamaumauga faʻamaumauga na iu i le 264 GB, 34 GB ma le 33 GB taʻitasi i luga o 'auʻaunaga e tolu.
ClickHouse fa'avasegaga o fa'atinoga
O le mea na sosoo ai na ou vaʻaia o le taimi sili ona vave na ou vaʻaia ai le faʻatautaia o fesili taʻitasi i luga o le laulau i le tele o taimi trips_mergetree_x3.
$ clickhouse-client --host=0.0.0.0O mea nei na mae'a ile 2.449 sekone.
SELECT cab_type, count(*)
FROM trips_mergetree_x3
GROUP BY cab_type;O mea nei na mae'a ile 0.691 sekone.
SELECT passenger_count,
avg(total_amount)
FROM trips_mergetree_x3
GROUP BY passenger_count;O mea nei na mae'a ile 0 sekone.
SELECT passenger_count,
toYear(pickup_date) AS year,
count(*)
FROM trips_mergetree_x3
GROUP BY passenger_count,
year;O mea nei na mae'a ile 0.983 sekone.
SELECT passenger_count,
toYear(pickup_date) AS year,
round(trip_distance) AS distance,
count(*)
FROM trips_mergetree_x3
GROUP BY passenger_count,
year,
distance
ORDER BY year,
count(*) DESC;Mo faʻatusatusaga, na ou faʻatautaia fesili tutusa i luga o le MergeTree-faʻavae laulau o loʻo nofo i luga o le server muamua.
Iloiloga faʻatinoga o le tasi ClickHouse node
O le mea na sosoo ai na ou vaʻaia o le taimi sili ona vave na ou vaʻaia ai le faʻatautaia o fesili taʻitasi i luga o le laulau i le tele o taimi trips_mergetree_x3.
O mea nei na mae'a ile 0.241 sekone.
SELECT cab_type, count(*)
FROM trips_mergetree
GROUP BY cab_type;O mea nei na mae'a ile 0.826 sekone.
SELECT passenger_count,
avg(total_amount)
FROM trips_mergetree
GROUP BY passenger_count;O mea nei na mae'a ile 1.209 sekone.
SELECT passenger_count,
toYear(pickup_date) AS year,
count(*)
FROM trips_mergetree
GROUP BY passenger_count,
year;O mea nei na mae'a ile 1.781 sekone.
SELECT passenger_count,
toYear(pickup_date) AS year,
round(trip_distance) AS distance,
count(*)
FROM trips_mergetree
GROUP BY passenger_count,
year,
distance
ORDER BY year,
count(*) DESC;Mafaufauga i taunuuga
O le taimi muamua lea na mafai ai e se faʻamaumauga tuʻufaʻatasia e leai se totogi o le CPU ona sili atu le faʻaogaina o le GPU i aʻu suʻega. O lena faʻamaumauga faʻavae GPU ua uma ona faia ni toe iloiloga se lua talu mai lena taimi, ae o le faʻatinoga na tuʻuina atu e le ClickHouse i luga o se node e tasi e matua manaia lava.
I le taimi lava e tasi, pe a faʻatinoina le Query 1 i luga o se afi tufatufaina, o tau i luga ole laiga o se faʻatonuga o le maualuga maualuga. Ou te faʻamoemoe na ou misia se mea i laʻu suʻesuʻega mo lenei pou aua e manaia le vaʻai i taimi o fesili e alu i lalo aʻo ou faʻaopoopoina nisi nodes i le fuifui. Ae ui i lea, e manaia pe a faʻatino isi fesili, faʻatupulaia le faʻatinoga e tusa ma le 2 taimi.
O le a manaia le vaʻai i le ClickHouse e faʻaleleia i le mafai ona tuʻu ese le teuina ma faʻatusatusa ina ia mafai ona latou fua faʻatasi. HDFS lagolago, lea na faʻaopoopoina i le tausaga talu ai, e mafai ona avea ma se laʻasaga i lenei mea. I le tulaga o le komipiuta, afai e mafai ona faatelevaveina se fesili se tasi e ala i le faʻaopoopoina o nisi nodes i le fuifui, o lona uiga o le lumanaʻi o lenei polokalama e matua susulu.
Faafetai mo le faʻaaluina o le taimi e faitau ai lenei pou. Ou te ofoina atu faufautua, tusiata, ma faʻataʻitaʻiga atinaʻe auaunaga i tagata faʻatau i Amerika i Matu ma Europa. Afai e te manaʻo e talanoa pe faʻapefea ona fesoasoani aʻu fautuaga i lau pisinisi, faʻamolemole faʻafesoʻotaʻi aʻu e ala i .
puna: www.habr.com