nathanlws

//
// See: https://github.com/foundationdb/sql-parser
//

import com.foundationdb.sql.parser.*;
import com.foundationdb.sql.parser.SQLParserContext.*;

public class CustomCase {
    public static class ColumnNamePrinter implements Visitor {
        @Override

jpountz

// Set codec, dir and segmentName accordingly to the segment you are trying to restore
Codec codec = new Lucene42Codec();
Directory dir = FSDirectory.open(new File("/tmp/test"));
String segmentName = "_0";

IOContext ioContext = new IOContext();
SegmentInfo segmentInfos = codec.segmentInfoFormat().getSegmentInfoReader().read(dir, segmentName, ioContext);
Directory segmentDir;
if (segmentInfos.getUseCompoundFile()) {
	segmentDir = new CompoundFileDirectory(dir, IndexFileNames.segmentFileName(segmentName, "", IndexFileNames.COMPOUND_FILE_EXTENSION), ioContext, false);

Pyrolistical

function map() {
	emit(1, {
		sum: this.value, // the field you want stats for
		min: this.value,
		max: this.value,
		count: 1,
		diff: 0
	});
}

radu-gheorghe

#!/usr/bin/env bash

###############FUNCTIONS############

function prepare {
    #optimize the index
    echo -n "Optimizing index $INDEX_NAME..."
    curl -XPOST "$ADDRESS/$INDEX_NAME/_optimize" 2>/dev/null| grep 'failed":0' >/dev/null
    if [ $? -eq 0 ]; then
        echo "done"

dadoonet

# Script to be placed in elasticsearch/bin
# Launch it from elasticsearch dir
# bin/backup indexname
# We suppose that data are under elasticsearch/data
# It will create a backup file under elasticsearch/backup

if [ -z "$1" ]; then
  INDEX_NAME="dummy"
else
  INDEX_NAME=$1

karussell

# TO_FOLDER=/something
# FROM=/your-es-installation

DATE=`date +%Y-%m-%d_%H-%M`
TO=$TO_FOLDER/$DATE/
echo "rsync from $FROM to $TO"
# the first times rsync can take a bit long - do not disable flusing
rsync -a $FROM $TO

# now disable flushing and do one manual flushing

nchammas

SET NOCOUNT ON;
USE [tempdb];

CREATE TABLE a_farting_farthing (
	  an_integer	INT	DEFAULT (1)
);

INSERT INTO a_farting_farthing
DEFAULT VALUES;

nherment

#!/bin/bash
# herein we backup our indexes! this script should run at like 6pm or something, after logstash
# rotates to a new ES index and theres no new data coming in to the old one. we grab metadatas,
# compress the data files, create a restore script, and push it all up to S3.
TODAY=`date +"%Y.%m.%d"`
INDEXNAME="logstash-$TODAY" # this had better match the index name in ES
INDEXDIR="/usr/local/elasticsearch/data/logstash/nodes/0/indices/"
BACKUPCMD="/usr/local/backupTools/s3cmd --config=/usr/local/backupTools/s3cfg put"
BACKUPDIR="/mnt/es-backups/"
YEARMONTH=`date +"%Y-%m"`

PeterAttardo

set hivevar:start_date=0000-01-01;
set hivevar:days=1000000;
set hivevar:table_name=[INSERT YOUR TABLE NAME HERE];

-- If you are running a version of HIVE prior to 1.2, comment out all uses of date_format() and uncomment the lines below for equivalent functionality

CREATE TABLE IF NOT EXISTS ${table_name} AS
WITH dates AS (
    SELECT date_add("${start_date}", a.pos) as date

miketheman

Adding 2 nodes to an existing 3-node ZooKeeper ensemble without losing the Quorum

Since many deployments may start out with 3 nodes and so little is known about how to grow a cluster from 3 memebrs to 5 members without losing the existing Quorum, here is an example of how this might be achieved.

In this example, all 5 nodes will be running on the same Vagrant host for the purpose of illustration, running on distinct configurations (ports and data directories) without the actual load of clients.

YMMV. Caveat usufructuarius.

Step 1: Have a healthy 3-node ensemble