hadoop - HIVE: Empty buckets getting created after partitioning in HDFS -

-

i trying create partition , buckets using hive.

for setting of properties:

set hive.enforce.bucketing = true; set hive.exec.dynamic.partition = true; set hive.exec.dynamic.partition.mode = nonstrict;

below code creating table:

create table transactions_production ( id string, dept string, category string, company string, brand string, date1 string, productsize int, productmeasure string, purchasequantity int, purchaseamount double) partitioned (chain string) clustered by(id) 5 buckets row format delimited fields terminated ',' stored textfile;

below code inserting data table:

insert overwrite table transactions_production partition (chain) select id, dept, category, company, brand, date1, productsize, productmeasure, purchasequantity, purchaseamount, chain transactions_staging;

what went wrong:

partitions , buckets getting created in hdfs data present in 1st bucket of partitions; remaining buckets empty.

please let me know did wrong , how resolve issue.

when using bucketing, hive comes hash of clustered value (here use id) , splits table many flat files inside partitions.

because table split hashes of id's size of each split based on values in table.

if have no values mapped buckets other first bucket, flat files empty.


Comments

Post a Comment

Popular posts from this blog

javascript - Chart.js (Radar Chart) different scaleLineColor for each scaleLine -

-
Image
i try , create radar chart using chart.js has various colours each scaleline, or coloured between scalelines. wondering if possible? from: to: i have working graph, though there doesn't seem method change individual scale lines. kind regards leigh you can extend radar chart type this, so chart.types.radar.extend({ name: "radaralt", initialize: function (data) { chart.types.radar.prototype.initialize.apply(this, arguments); var originalscaledraw = this.scale.draw; var ctx = this.chart.ctx; this.scale.draw = function () { var linewidth = this.linewidth; // bypasses line drawing in originalscaledraw this.linewidth = linewidth; originalscaledraw.apply(this, arguments); ctx.linewidth = this.linewidth; var scale = this; // draw chart.helpers.each(scale.ylabels, function (label, index) { // color of ...
Read more

apache - Error with PHP mail(): Multiple or malformed newlines found in additional_header -

-
suddenly have started receiving above error without changes having been made script. host 1and1 (i know...) the script still works fine on different server, , suspicion there must have been server config change has lead this, although hosts plead ignorance. there's no information on above error @ in google can find - have ideas? server running apache if helps. had similar problem. came out of blue. no php code changed. what changed: php upgraded 5.5.25-1 5.5.26. a security risk in php mail() function has been fixed , newlines in additional_headers allowed no more. because newlines mean: starts email message (and surely don't want inject newlines through headers followed evil message). what have worked fine, e.g. having newlines after headers or passing whole message additional_headers , function no more. solution : sanitize headers. no multiple newlines in additional_headers argument. these count "multiple or malformed newlines":...
Read more

java - Android – MapFragment overlay button shadow, just like MyLocation button -

-
Image
i'm struggling add shadow custom overlay button on google map. goal make custom button google's mylocation button. here's how app looks now: layout.xml <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:map="http://schemas.android.com/apk/res-auto" android:layout_height="match_parent" android:layout_width="match_parent" style="@style/apptheme"> <fragment android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/map" tools:context=".mapsactivity" android:name="com.google.android.gms.maps.supportmapfragment" android:layout_alignparentend="true" android:layout_alignparentstart="true" android:layout_alignparentbottom="true" ...
Read more