Analytics/Server Admin Log

2020-05-04

 * 17:08 joal: Restart refinery-sqoop-mediawiki-private.service on an-launcher1001
 * 17:03 elukey: restart refinery-drop-webrequest-refined-partitions after manual chown
 * 17:03 joal: Restart refinery-sqoop-whole-mediawiki.service on an-launcher1001
 * 17:02 elukey: chown analytics (was: hdfs) /wmf/data/wmf/webrequest/webrequest_source=text/year=2019/month=12/day=14/hour= { 13,18 }
 * 16:44 joal: Deploy refinery again using scap (trying to fox sqoop)
 * 15:39 joal: restart refinery-sqoop-whole-mediawiki.service
 * 15:37 joal: restart refinery-sqoop-mediawiki-private.service
 * 14:50 joal: Deploy refinery using scap to fix sqoop
 * 13:43 elukey: restart refinery-sqoop-whole-mediawiki to test failure exit codes
 * 06:50 elukey: upgrade druid-exporter on all druid nodes

2020-05-03

 * 19:36 joal: Rerun mobile_apps-session_metrics-wf-7-2020-4-26

2020-05-02

 * 10:54 joal: Rerun predictions-actor-hourly-wf-2020-5-2-0

2020-05-01

 * 16:59 elukey: test prometheus-druid-exporter 0.8 on druid1001 (deb packages not yet uploaded, just build and manually installed)

2020-04-30

 * 10:36 elukey: run superset init to add missing perms on an-tool1005 and analytics-tool1004 - T249681
 * 07:14 elukey: correct X-Forwarded-Proto for superset (http -> https) and restart it

2020-04-29

 * 18:55 joal: Kill-restart cassandra-daily-coord-local_group_default_T_pageviews_per_article_flat
 * 18:46 joal: Kill-restart pageview-hourly job
 * 18:45 joal: No restart needed for pageview-druid jobs
 * 18:36 joal: kill restart pageview-druid jobs (hourly, daily, monthly) to add new dimension
 * 18:29 joal: Kill-restart data-quality-stats-hourly bundle
 * 17:57 joal: Deploy refinery on HDFS
 * 17:45 elukey: roll restart Presto workers to pick up the new jvm settings (110G heap size)
 * 16:06 joal: Deploying refinery using scap
 * 15:57 joal: Deploying AQS using scap
 * 14:26 elukey: enable TLS consumer/producers for kafka main -> jumbo mirror maker - T250250
 * 13:48 joal: Releasing refinery 0.0.123 onto archiva with Jenkins
 * 08:47 elukey: roll restart zookeeper on an-conf* to pick up new openjdk11 updates (affects hadoop)

2020-04-27

 * 13:02 elukey: superset 0.36.0 deployed to an-tool1005

2020-04-26

 * 18:14 elukey: restart nodemanager on analytics1054 - failed due to heap pressure
 * 18:14 elukey: re-run webrequest-load-coord-text 26/04/2020T16 via Hue

2020-04-23

 * 13:57 elukey: launch again data quality stats bundle with https://gerrit.wikimedia.org/r/#/c/analytics/refinery/+/592008/ applied locally

2020-04-22

 * 06:46 elukey: kill dataquality hourly bundle again, traffic_by_country keeps failing
 * 06:11 elukey: start data quality bundle hourly with --user=analytics
 * 05:45 elukey: add a separate refinery scap target for the Hadoop test cluster and redeploy to check new settings

2020-04-21

 * 23:17 milimetric: restarted webrequest bundle, babysitting that first before going on
 * 23:00 milimetric: forgot a small jar version update, finished deploying now
 * 21:38 milimetric: deployed twice because analytics1030 failed with "OSError { } " but seems ok after the second deploy
 * 14:27 elukey: add motd to notebook100[3,4] to alert about host deprecation (in favor of stat100x)
 * 11:51 elukey: manually add SUCCESS flags under /wmf/data/wmf/banner_activity/daily/year=2020/month=1 and /wmf/data/wmf/banner_activity/daily/year=2019/month=12 to unblock druid banner monthly indexations

2020-04-20

 * 14:38 ottomata: restarting eventlogging-processor with updated python3-ua-parser for parsing KaiOS user ageints
 * 10:28 elukey: drop /srv/log/mw-log/archive/api from stat1007 (freeing 1.3TB of space!)

2020-04-18

 * 21:40 elukey: force hdfs-balancer as attempt to redistribute hdfs blocks more evenly to worker nodes (hoping to free the busiest ones)
 * 21:32 elukey: drop /user/analytics-privatedata/.Trash/* from hdfs to free some space (~100G used)
 * 21:25 elukey: drop /var/log/hadoop-yarn/apps/analytics-search/* from hdfs to free space (~8T replicated used)
 * 21:21 elukey: drop /user/ { analytics|hdfs } /.Trash/* from hdfs to free space (~100T used)
 * 21:12 elukey: drop /var/log/hadoop-yarn/apps/analytics from hdfs to free space (15.1T replicated)

2020-04-17

 * 13:45 elukey: lock down /srv/log/mw-log/archive/ on stat1007 to analytics-privatedata-users access only
 * 10:26 elukey: re-created default venv for notebooks on notebook100[3,4] (missed to git pull before re-creaing it the last time)

2020-04-16

 * 05:34 elukey: restart hadoop-yarn-nodemanager on an-worker108[4,5] - failed after GC OOM events (heavy spark jobs)

2020-04-15

 * 14:03 elukey: update Superset Alpha role perms with what stated in T249923#6058862
 * 09:35 elukey: restart jupyterhub too as follow up
 * 09:35 elukey: execute "create_virtualenv.sh ../venv" on stat1006, notebook1003, notebook1004 to apply new settings to Spark kernels (re-creating them)
 * 09:09 elukey: restart druid brokers on druid100[4-6] - stuck after datasource deletion

2020-04-11

 * 09:19 elukey: set hive-security: read-only for the Presto hive connector and roll restart the cluster

2020-04-10

 * 16:31 elukey: enable TLS from kafkatee to Kafka on analytics1030 (test instance)
 * 15:45 elukey: migrate data_purge timers from an-coord1001 to an-launcher1001
 * 09:11 elukey: move druid_load jobs from an-coord1001 to an-launcher1001
 * 08:08 elukey: move project_namespace_map from an-coord1001 to an-launcher1001
 * 07:38 elukey: move hdfs-cleaner from an-coord1001 to an-launcher1001

2020-04-09

 * 20:54 elukey: re-run webrequest upload/text hour 15:00 from Hue (stuck due to missing _IMPORTED flag, caused by an-launcher1001 migration. Andrew fixed it re-running manually the Camus checker)
 * 16:00 elukey: move camus timers from an-coord1001 to an-launcher1001
 * 15:20 elukey: absent spark refine timers on an-coord1001 and move them to an-launcher1001

2020-04-07

 * 09:17 elukey: enable refine for TwoColConflictExit (EL schema)

2020-04-06

 * 13:23 elukey: upgraded stat1008 to AMD ROCm 3.3 (enables tensorflow 2.x)
 * 12:33 joal: Bump AQS druid backend to 2020-03
 * 11:50 elukey: deploy new druid datasource in Druid public
 * 06:29 elukey: allow all analytics-privatedata-users to use the GPUs on stat1005/8

2020-04-04

 * 06:52 elukey: restart refinery-import-page-history-dumps

2020-04-03

 * 09:57 elukey: remove TwoColConflictExit from eventlogging's refine blacklist

2020-04-02

 * 19:31 joal: restart paegviewhourly job after manual patch
 * 19:29 joal: Manually patching last deploy to fic virtualpageview job - code merged
 * 17:48 joal: Kill/restart virtualpageview-hourly-coord after deploy
 * 16:55 joal: Deploy refinery onto HDFS
 * 16:30 joal: Deploy refinery using scap
 * 16:12 elukey: re-enable timers on an-coord1001 after maintenance
 * 15:52 elukey: restart hive server2/metastore with G1 settings
 * 14:05 elukey: temporary stop timers on an-coord1001 to facilitate hive daemons restarts
 * 13:47 hashar: test 1 2 3
 * 13:30 joal: Releasing refinery-source v0.0.121 using new jenkins-docker :)
 * 08:23 elukey: kill/restart netflow realtime druid indexation with a new dimension (peer_ip_src) - T246186

2020-04-01

 * 21:19 joal: restart pageview-hourly-wf-2020-4-1-15
 * 18:24 joal: Kill learning-features-actor-hourly as new version to come
 * 18:23 joal: Restart unique_devices-per_project_family-monthly-wf-2020-3 and aqs-hourly-wf-2020-4-1-15 after hive fialure
 * 18:21 joal: restart webrequest-load-wf-upload-2020-4-1-16 and webrequest-load-wf-text-2020-4-1-16 after hive failure
 * 18:14 joal: Kill groceryheist job taking half the cluster
 * 18:06 ottomata: restarted hive-server2
 * 10:07 jbond42: updating icu packages

2020-03-31

 * 12:57 jbond42: updating icu on presto-analytics-canary and hadoop-worker-canary

2020-03-30

 * 07:27 elukey: run /usr/local/bin/refine_sanitize_eventlogging_analytics_immediate --ignore_failure_flag=true --since=72 --verbose --table_whitelist_regex="ResourceTiming" refine_sanitize_eventlogging_analytics_immediate to fix _REFINE_FAILED events
 * 07:16 elukey: run eventlogging refine manually for schemas "EditorActivation|EditorJourney|HomepageVisit|VisualEditorFeatureUse|WikibaseTermboxInteraction|UploadWizardErrorFlowEvent|MobileWikiAppiOSReadingLists|ContentTranslationCTA|QuickSurveysResponses|MobileWikiAppiOSSessions to fix _REFINE_FAILED events

2020-03-29

 * 08:44 elukey: blacklist TwoColConflictExit from Eventlogging Refine to avoid alarm spam

2020-03-28

 * 16:54 elukey: restart yarn nodemanger on analytics1071 - network errors in the logs

2020-03-27

 * 08:09 elukey: deployed new kernerls for https://gerrit.wikimedia.org/r/580083 on stat1004

2020-03-26

 * 09:09 elukey: re-running manually webrequest-load upload 26/03/2020T08 - kerberos failures

2020-03-25

 * 08:14 elukey: restart presto-server on an-coord1001 to remove jmx catalog config

2020-03-24

 * 15:46 elukey: restart all cron.service processes on stat/notebook (killing long lingering processes) to move the unit under user.slice

2020-03-21

 * 14:17 joal: Restart wikidata_item_page_link job with manual fix - review to be confirmed
 * 14:06 joal: Kill buggy wikidata_item_page_link job

2020-03-18

 * 19:39 fdans: refinery deployed
 * 18:52 fdans: deploying refinery
 * 18:51 fdans: refinery source 0.0.119 jars generated and symlinked
 * 18:17 fdans: beginning deploy of refinery-source 0.0.119

2020-03-17

 * 17:25 elukey: deploy superset to enable Presto and Kerberos (Pyhive 0.6.2.)

2020-03-16

 * 19:43 joal: Kill-restart wikidata-articleplaceholder_metrics-coord to fix yarn queue
 * 18:30 mforns: Deployed refinery using scap, then deployed onto hdfs
 * 17:05 elukey: roll restart of hadoop namenodes to get the new GC setting (MaxGCPauseMillis 400 -> 1000)

2020-03-13

 * 12:18 joal: Restart cassandra-daily-wf-local_group_default_T_pageviews_per_article_flat-2020-3-12

2020-03-12

 * 22:53 mforns: Deployed refinery using scap, then deployed onto hdfs
 * 22:22 mforns: deployed refinery-source using jenkins
 * 11:09 elukey: roll restart kerberos kdcs to pick up new ticket lifetime settings (10h -> 48h)
 * 08:27 elukey: re-running refine eventlogging with --since 12 (very conservative but just in case)

2020-03-11

 * 14:49 elukey: add xmldumps mountpoints on stat1004 and stat1005

2020-03-10

 * 15:20 elukey: remove the analytics user keytab from stat100[4,5]
 * 15:06 elukey: move stat1006 to role::statistics::explorer
 * 09:24 elukey: removed /etc/mysql/conf.d/stats-research-client.cnf from all stat boxes (all file used for RU, now on an-launcher1001)

2020-03-09

 * 07:27 elukey: deploy jupyterhub on notebook100[3,4] (manual venv re-creation) to allow the use of the user.slice - T247055
 * 07:26 elukey: upgrade nodejs from 6->10 on stat1* and notebook1*

2020-03-08

 * 17:58 elukey: restart hadoop-yarn-nodemanger on an-worker1087

2020-03-06

 * 14:58 joal: AQS new druid snapshot released (2020-02)
 * 10:06 elukey: roll restart Presto daemons for openjdk upgrades
 * 09:45 elukey: roll restart of cassandra on AQS to pick up new openjdk upgrades

2020-03-05

 * 19:45 elukey: deleted dangling 'reports' symlink on stat100[6,7] in /srv/published
 * 19:39 elukey: mv /srv/reportupdater to /srv/reportupdater-backup05032020 on stat100[6,7]
 * 16:34 mforns: restart turnilo to refresh deleted datasources
 * 14:16 elukey: restart hdfs/yarn master daemons to pick up new core-site changes for Superset
 * 06:48 elukey: restart yarn on analytics1074 (GC overhead, traces of network errors with datanodes)

2020-03-04

 * 08:41 joal: Kill-restart mediawiki-history-reduced-coord
 * 08:38 joal: Kill-restart mediawiki-history-dumps-coord

2020-03-03

 * 21:19 joal: Kill-restart actor jobs
 * 21:17 joal: kill-restart mediawiki-history-check_denormalize-coord
 * 21:16 joal: Kill-restart mediawiki-history job
 * 21:10 joal: Kill Wikidataplaceholder failling coord
 * 21:08 joal: Kill restart wikidata-specialentitydata_metrics-coord
 * 21:07 joal: Start Wikidataplaceholder job
 * 21:06 joal: Kill/restart edit_hourly job
 * 21:04 joal: Start wikidata_item_page_link coordinator
 * 20:46 joal: Deploy refinery onto HDFS
 * 20:34 joal: Deploy refinery using scap
 * 20:28 joal: Add new jars to refinery using Jenkins
 * 20:01 joal: Release refinery-source v0.0.117 with Jenkins
 * 16:37 mforns: restarted turnilo to refresh deleted test datasource
 * 11:56 joal: Kill actor-hourly oozie test jobs (precision of previous message)
 * 11:55 joal: Kill actor-hourly tests
 * 10:50 elukey: restarted kafka jumbo (kafka + mirror maker) for openjdk upgrades
 * 09:22 joal: Rerunning failed mediawiki-history jobs for 2020-02 after mediawiki-history-denormalize issue
 * 09:16 joal: Manually restarting mediawiki-history-denormalize with new patch to try
 * 08:36 elukey: roll restart kafka-jumbo for openjdk upgrades
 * 08:34 elukey: re-enable timers on an-coord1001 after maintenance
 * 08:30 joal: Correct previsou message: Kill mediawiki-history (not mediawiki-history-reduced) as it is failing
 * 08:30 joal: Kill mediawiki-history-reduced as it is failing
 * 08:22 elukey: hive metastore/server2 now running without zookeeper settings and without DBTokenStore (in memory one used instead, the default)
 * 08:19 elukey: restart oozie/hive daemons on an-coord1001 for openjdk upgrades
 * 06:41 elukey: roll restart druid daemons for openjdk upgrades
 * 06:39 elukey: sto timers on an-coord1001 to facilitate daemon restarts (hive/oozie)

2020-03-02

 * 19:58 joal: Remove faulty _REFINED file at /wmf/data/event/mediawiki_revision_score/datacenter=eqiad/year=2020/month=3/day=2/hour=10/_REFINED
 * 15:38 elukey: apply new settings to all stat/notebooks
 * 15:31 elukey: setting new user.slice global memory/cpu settings on notebook1003
 * 15:25 elukey: setting new user-slice global memory/cpu settings on stat1007

2020-02-28

 * 19:10 milimetric: deployed 0.0.116 and restarted webrequest load bundle at 2020-02-28T14
 * 14:49 joal: Drop test keyspaces in cassandra cluster

2020-02-27

 * 21:16 milimetric: tried to deploy AQS but it failed with the same integration test on mediarequests, sending email

2020-02-26

 * 15:06 ottomata: dropped and re-added backfilled partitions on event.CentralNoticeImpression table to propogate schema alter on main table - T244771
 * 09:50 joal: Force delete old api/cirrus events from HDFS trash to free some space

2020-02-24

 * 18:20 elukey: move report updater jobs from stat1007 to an-launcher1001

2020-02-22

 * 14:21 elukey: restart hadoop-yarn-nodemanager on analytics1044 - broken disk, apply hiera overrides to exclude it
 * 14:11 elukey: restart hadoop-yarn-nodemanager on analytics1073 - process died, logs saved in /home/elukey

2020-02-21

 * 16:04 ottomata: altered event.CentralNoticeImpression table column event.campaignStatuses to type string, will backfill data - T244771
 * 11:49 elukey: restart varnishkafka on various cp30xx nodes
 * 11:41 elukey: restart varnishkafka on cp3057 (stuck in timeouts to kafka, analytics alarms raised)
 * 08:19 fdans: deploying refinery
 * 00:11 joal: Rerun failed wikidata-json_entity-weekly-coord instances after having created the missing hive table

2020-02-20

 * 16:57 fdans: refinery source jars updated
 * 16:39 fdans: deploying refinery source 0.0.114
 * 15:16 fdans: deploying AQS

2020-02-19

 * 16:58 ottomata: Deployed refinery using scap, then deployed onto hdfs

2020-02-17

 * 18:29 elukey: reboot turnilo and superset's hosts for kernel upgrades
 * 18:25 elukey: restart kafka on kafka-jumbo1001 to pick up new openjdk updates
 * 18:22 elukey: restart cassandra on aqs1004 to pick up new openjdk updates
 * 17:59 elukey: restart druid daemons on druid1003 to pick up new openjdk updates
 * 17:58 elukey: restart cassandra on aqs1004 to pick up new openjdk updates
 * 17:56 elukey: restart hadoop daemons on analytics1042 to pick up new openjdk updates

2020-02-15

 * 12:07 elukey: re-run failed pageview druid hour
 * 12:05 elukey: re-run failed virtualpageview hours

2020-02-12

 * 14:33 elukey: restart hue on analytics-tool1001
 * 13:36 joal: Kill-restart webrequest bundle to see if it mitigates the error

2020-02-10

 * 15:26 elukey: kill application_1576512674871_246621 (consuming too much memory)
 * 14:31 elukey: kill application_1576512674871_246419 (eating a ton of ram on the cluster)

2020-02-08

 * 09:35 elukey: created /wmf/data/raw/wikidata/dumps/all_ttl on hdfs
 * 09:35 elukey: created /wmf/data/raw/wikidata/dumps/all_json on hdfs

2020-02-05

 * 21:14 joal: Kill data_quality_stats-hourly-bundle and data_quality_stats-daily-bundle
 * 21:11 joal: Kill-restart mediawiki-history-dumps-coord, drop existing data, and restart at 2019-11
 * 21:06 joal: Kill-restart mediawiki-wikitext-history-coord and mediawiki-wikitext-current-coord
 * 20:51 joal: Deploy refinery using scap
 * 20:29 joal: Refinery-source released in archiva by jenkins
 * 20:20 joal: Deploy hdfs-tools 0.0.5 using scap

2020-02-03

 * 11:20 elukey: restart oozie on an-coord1001
 * 10:11 elukey: enable all timers on an-coord1001 after spark encryption/auth settings
 * 09:32 elukey: roll restart yarn node managers again to pick up spark encryption/authentication settings
 * 08:34 elukey: stop timers on an-coord1001 to drain the cluster and ease the deploy of spark encryption settings
 * 07:58 elukey: roll restart hadoop yarn node managers to pick up new libcrypto.so link (shouldn't be necessary but just in case)
 * 07:24 elukey: create /usr/lib/x86_64-linux-gnu/libcrypto.so on all the analytics nodes via puppet

2020-01-27

 * 05:38 elukey: re-run webrequest text 2020-01-26T20/21 with higher dataloss thresholds (false positives)
 * 02:49 elukey: re-run refine eventlogging manually to clear out refine failed events

2020-01-26

 * 17:58 elukey: re-run failed refine job for MobileWebUIActionsTracking 2020-01-26T12
 * 17:32 elukey: restart varnishkafka on cp3056/cp3064 due to network issues on the hosts

2020-01-23

 * 17:48 milimetric: launching a sqoop for imagelinks (will be slow because tuning sess)

2020-01-20

 * 12:19 elukey: restart zookeeper on an-conf100X to pick up openjdk-11 updates

2020-01-18

 * 10:06 elukey: re-run all entropy job failed via Hue (StopWatch issue)

2020-01-16

 * 20:52 mforns: deployed refinery accompanying source v0.0.112
 * 17:00 mforns: deployed refinery-source v0.0.112
 * 15:17 elukey: upgrade superset to 0.35.2
 * 15:14 elukey: stop superset as prep step for upgrade

2020-01-15

 * 10:44 elukey: remove flume-ng and spark-python/core packages from an-coord1001,analytics1030,analytics-tool1001,analytics1039 - T242754
 * 10:39 elukey: remove flume-ng from all stat/notebooks - T242754
 * 10:37 elukey: remove spark-core flume-ng from all the hadoop workers - T242754
 * 08:44 elukey: move aqs to the new rsyslog-logstash pipeline

2020-01-14

 * 20:12 milimetric: deployed aqs with new service-runner version 2.7.3

2020-01-13

 * 21:45 milimetric: webrequest restarted
 * 21:32 milimetric: killing webrequest bundle for restart
 * 15:00 joal: Deploy hdfs-tools 0.0.3 using scap
 * 14:24 joal: Releasing hdfs-tools 0.0.3 to archiva
 * 12:54 elukey: restart hue to re-apply user hive limits (again)

2020-01-10

 * 14:30 elukey: restart oozie with new settings to instruct it to pick up spark-defaults.conf settings from /etc/spark2/conf
 * 07:38 elukey: re-run virtualpageviews-druid-daily 09/01/2020 via Hue
 * 07:37 elukey: systemctl restart drop-el-unsanitized-events on an-coord1001

2020-01-09

 * 11:17 moritzm: installing cyrus-sasl security updates
 * 11:10 elukey: remove old accounts (user: absent) from Superset
 * 10:30 elukey: revert hue's hive query limit and restart hue - T242306
 * 07:45 elukey: re-run failed data-quality-stats-event.navigationtiming-useragent_entropy-hourly-coord 2020/01/09T00
 * 07:33 elukey: kill test_elukey_webrequest_sampled_128 from druid
 * 07:30 elukey: restart turnilo after updating the webrequest_sampled_128's config

2020-01-08

 * 20:44 joal: Restart webrequest-load-bundle to update queue to production
 * 20:17 joal: rerun edit-hourly-wf-2019-12 after having updated the underlying table
 * 20:06 joal: Prepare and start learning-features-actor-hourly-coord
 * 19:56 joal: kill wikidata-articleplaceholder_metrics-coord as it is buggy
 * 19:56 joal: Kill-restart edit-hourly-coord and edit-hourly-druid-coord
 * 19:48 joal: Kill-restart wikidata-articleplaceholder_metrics-coord
 * 19:44 joal: Kill-restart mediawiki-history-load-coord, mediawiki-history-denormalize-coord, mediawiki-history-check_denormalize-coord, mediawiki-history-metrics-coord, mediawiki-history-reduced-coord, mediawiki-history-dumps-coord
 * 19:42 joal: Kill-restart mediawiki-history-load-coord,
 * 19:29 joal: Kill-restart webrequest-druid-daily-coord and webrequest-druid-hourly-coord after deploy
 * 19:16 joal: Deploy refinery on HDFS
 * 19:04 joal: Deploy refinery using scap
 * 18:30 joal: Releasing refinery-0.0.110 to archiva using Jenkins
 * 18:11 joal: AQS deployed with new druid datasource (2019-12)
 * 17:52 joal: Rerun webrequest-load-wf-text-2020-1-8-15 with updated thresholds after frontend issue

2020-01-07

 * 17:54 elukey: apt-get remove python3.5 on stat1005
 * 15:16 elukey: re-enable timers on an-coord1001 after hive restart
 * 15:03 elukey: restart hive (server+metastore) on an-coord1001 to apply delegation token settings
 * 14:36 elukey: stop timers on an-coord1001 as prep step to restart hive
 * 14:05 elukey: apply max cpu cores usage (via systemd cgroups) on stat/notebook
 * 07:59 elukey: restart hue (again) with correct principal settings)
 * 07:42 elukey: restart Hue after applying a new kerberos setting (hue_principal, was not specified before)

2020-01-06

 * 16:45 joal: Manually sqoop missing tables (content,content_models,slot_roles,slots,wbc_entity_usage0

2020-01-02

 * 18:32 elukey: restart hue with new hive query limits