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Posted to dev@asterixdb.apache.org by "Chen Li (Code Review)" <do...@asterix-gerrit.ics.uci.edu> on 2015/08/19 04:14:34 UTC
Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
Chen Li has uploaded a new change for review.
https://asterix-gerrit.ics.uci.edu/359
Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
polishing the feeds docs
Change-Id: I46420c770ab194190bf122965f5e7525893ed128
---
M asterix-doc/src/site/markdown/feeds/tutorial.md
1 file changed, 75 insertions(+), 60 deletions(-)
git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/59/359/1
diff --git a/asterix-doc/src/site/markdown/feeds/tutorial.md b/asterix-doc/src/site/markdown/feeds/tutorial.md
index 009e2b1..4b9f59e 100644
--- a/asterix-doc/src/site/markdown/feeds/tutorial.md
+++ b/asterix-doc/src/site/markdown/feeds/tutorial.md
@@ -12,8 +12,9 @@
## <a name="Introduction">Introduction</a> ##
-In this document, we describe the support for data ingestion in AsterixDB, an open-source Big Data Management System (BDMS) that provides a platform for storage and analysis of large volumes of semi-structured data. Data feeds are a new mechanism for having continuous data arrive into a BDMS from external sources and incrementally populate a persisted dataset and associated indexes. We add a new BDMS architectural component, called a data feed, that makes a Big Data system the caretaker for functionality that
-used to live outside, and we show how it improves users’ lives and system performance.
+In this document, we describe the support for data ingestion in
+AsterixDB. Data feeds are a new mechanism for having continuous data arrive into a BDMS from external sources and incrementally populate a persisted dataset and associated indexes. We add a new BDMS architectural component, called a data feed, that makes a Big Data system the caretaker for functionality that
+used to live outside, and we show how it improves users' lives and system performance.
## <a name="DataFeedBasics">Data Feed Basics</a> ##
@@ -28,11 +29,11 @@
may operate in a push or a pull mode. Push mode involves just
one initial request by the adaptor to the data source for setting up
the connection. Once a connection is authorized, the data source
-“pushes” data to the adaptor without any subsequent requests by
+"pushes" data to the adaptor without any subsequent requests by
the adaptor. In contrast, when operating in a pull mode, the adaptor
makes a separate request each time to receive data.
AsterixDB currently provides built-in adaptors for several popular
-data sources—Twitter, CNN, and RSS feeds. AsterixDB additionally
+data sources such as Twitter, CNN, and RSS feeds. AsterixDB additionally
provides a generic socket-based adaptor that can be used
to ingest data that is directed at a prescribed socket.
@@ -46,7 +47,7 @@
create dataverse feeds;
use dataverse feeds;
- create type TwitterUser if not exists as open{
+ create type TwitterUser if not exists as open{
screen_name: string,
language: string,
friends_count: int32,
@@ -67,10 +68,10 @@
primary key id;
We also create a dataset that we shall use to persist the tweets in AsterixDB.
-Next we make use of the create feed AQL statement to define our example data feed.
+Next we make use of the `create feed` AQL statement to define our example data feed.
#####Using the "push_twitter" feed adapter#####
-The push_twitter adaptor requires setting up an application account with Twitter. To retrieve
+The "push_twitter" adaptor requires setting up an application account with Twitter. To retrieve
tweets, Twitter requires registering an application with Twitter. Registration involves providing a name and a brief description for the application. Each application has an associated OAuth authentication credential that includes OAuth keys and tokens. Accessing the
Twitter API requires providing the following.
1. Consumer Key (API Key)
@@ -78,13 +79,13 @@
3. Access Token
4. Access Token Secret
+The "push_twitter" adaptor takes as configuration the above mentioned
+parameters. End users are required to obtain the above authentication credentials prior to using the "push_twitter" adaptor. For further information on obtaining OAuth keys and tokens and registering an application with Twitter, please visit http://apps.twitter.com
-The "push_twitter" adaptor takes as configuration the above mentioned parameters. End-user(s) are required to obtain the above authentication credentials prior to using the "push_twitter" adaptor. For further information on obtaining OAuth keys and tokens and registering an application with Twitter, please visit http://apps.twitter.com
-
-Given below is an example AQL statement that creates a feed - TwitterFeed by using the
+Given below is an example AQL statement that creates a feed called "TwitterFeed" by using the
"push_twitter" adaptor.
-
+ use dataverse feeds;
create feed TwitterFeed if not exists using "push_twitter"
(("type-name"="Tweet"),
@@ -94,21 +95,20 @@
("access.token.secret"="*************"));
It is required that the above authentication parameters are provided valid values.
-Note that the create feed statement does not initiate the flow of data from Twitter into our AsterixDB instance. Instead, the create feed statement only results in registering the feed with AsterixDB. The flow of data along a feed is initiated when it is connected
+Note that the `create feed` statement does not initiate the flow of data from Twitter into our AsterixDB instance. Instead, the `create feed` statement only results in registering the feed with AsterixDB. The flow of data along a feed is initiated when it is connected
to a target dataset using the connect feed statement (which we shall revisit later).
####Ingesting an RSS Feed
-RSS (Rich Site Summary); originally RDF Site Summary; often called Really Simple Syndication, uses a family of standard web feed formats to publish frequently updated information: blog entries, news headlines, audio, video. An RSS document (called "feed", "web feed", or "channel") includes full or summarized text, and metadata, like publishing date and author's name. RSS feeds enable publishers to syndicate data automatically.
+RSS (Rich Site Summary), originally RDF Site Summary and often called Really Simple Syndication, uses a family of standard web feed formats to publish frequently updated information: blog entries, news headlines, audio, video. An RSS document (called "feed", "web feed", or "channel") includes full or summarized text, and metadata, like publishing date and author's name. RSS feeds enable publishers to syndicate data automatically.
#####Using the "rss_feed" feed adapter#####
AsterixDB provides a built-in feed adaptor that allows retrieving data given a collection of RSS end point URLs. As observed in the case of ingesting tweets, it is required to model an RSS data item using AQL.
- create dataverse feeds if not exists;
use dataverse feeds;
- create type Rss if not exists as open{
+ create type Rss if not exists as open{
id: string,
title: string,
description: string,
@@ -121,40 +121,43 @@
Next, we define an RSS feed using our built-in adaptor "rss_feed".
+ use dataverse feeds;
+
create feed my_feed using
rss_feed (
("type-name"="Rss"),
("url"="http://rss.cnn.com/rss/edition.rss")
);
-In the above definition, the configuration parameter "url" can be a comma separated list that reflects a collection of RSS URLs, where each URL corresponds to an RSS endpoint or a RSS feed.
+In the above definition, the configuration parameter "url" can be a comma-separated list that reflects a collection of RSS URLs, where each URL corresponds to an RSS endpoint or a RSS feed.
The "rss_adaptor" retrieves data from each of the specified RSS URLs (comma separated values) in parallel.
-
So far, we have discussed the mechanism for retrieving data from the external world into the AsterixDB system. However, the arriving data may require certain pre-processing prior to being persisted in AsterixDB storage. Next, we discuss how the arriving data can be pre-processed.
-
## <a id="PreprocessingCollectedData">Preprocessing Collected Data</a> ###
A feed definition may optionally include the specification of a
user-defined function that is to be applied to each feed record prior
to persistence. Examples of pre-processing might include adding
attributes, filtering out records, sampling, sentiment analysis, feature
-extraction, etc. The pre-processing is expressed as a userdefined
+extraction, etc. The pre-processing is expressed as a user-defined
function (UDF) that can be defined in AQL or in a programming
-language like Java. An AQL UDF is a good fit when
+language such as Java. An AQL UDF is a good fit when
pre-processing a record requires the result of a query (join or aggregate)
over data contained in AsterixDB datasets. More sophisticated
processing such as sentiment analysis of text is better handled
by providing a Java UDF. A Java UDF has an initialization phase
that allows the UDF to access any resources it may need to initialize
itself prior to being used in a data flow. It is assumed by the
-AsterixDB compiler to be stateless and thus usable as an embarassingly
-parallel black box. In constrast, the AsterixDB compiler can
+AsterixDB compiler to be stateless and thus usable as an embarrassingly
+parallel black box. In contrast, the AsterixDB compiler can
reason about an AQL UDF and involve the use of indexes during
its invocation.
-We consider an example transformation of a raw tweet into its lightweight version - ProcessedTweet - which is defined next.
+We consider an example transformation of a raw tweet into its
+lightweight version called "ProcessedTweet", which is defined next.
+
+ use dataverse feeds;
create type ProcessedTweet if not exists as open {
id: string,
@@ -165,19 +168,23 @@
country: string,
topics: [string]
};
+
+ create dataset ProcessedTweets(ProcessedTweet)
+ primary key id;
-
-The processing required in transforming a collected tweet to its lighter version (of type ProcessedTweet) involves extracting the topics or hash-tags (if any) in a tweet
-and collecting them in the referred-topics attribute for the tweet.
-Additionally, the latitude and longitude values (doubles) are combined into the spatial point type. Note that spatial data types are considered as first class citizens that come with the support for creating indexes. Next we show a revised version of our example TwitterFeed that involves the use of a UDF. We assume that the UDF that contains the transformation logic into a ProcessedTweet is avaialable as a Java UDF inside an AsterixDB library named 'testlib'. We defer the writing of a Java UDF and its installation as part of an AsterixDB library to a later section of this document.
+The processing required in transforming a collected tweet to its lighter version of type "ProcessedTweet" involves extracting the topics or hash-tags (if any) in a tweet
+and collecting them in the referred "topics" attribute for the tweet.
+Additionally, the latitude and longitude values (doubles) are combined into the spatial point type. Note that spatial data types are considered as first-class citizens that come with the support for creating indexes. Next we show a revised version of our example TwitterFeed that involves the use of a UDF. We assume that the UDF that contains the transformation logic into a "ProcessedTweet" is available as a Java UDF inside an AsterixDB library named 'testlib'. We defer the writing of a Java UDF and its installation as part of an AsterixDB library to a later section of this document.
+
+ use dataverse feeds;
create feed ProcessedTwitterFeed if not exists
using "push_twitter"
- (("type-name"="Tweet"));
+ (("type-name"="Tweet"))
apply function testlib#processRawTweet;
Note that a feed adaptor and a UDF act as pluggable components. These
-contribute towards providing a generic ‘plug-and-play‘ model where
+contribute towards providing a generic "plug-and-play" model where
custom implementations can be provided to cater to specific requirements.
####Building a Cascade Network of Feeds####
@@ -202,18 +209,26 @@
can be persisted into a dataset, and/or can be made to derive other
secondary feeds to form a cascade network. A primary feed and a
dependent secondary feed form a hierarchy. As an example, we next show an
-example AQL statement that redefines the previous feed—
-ProcessedTwitterFeed in terms of their
+example AQL statement that redefines the previous feed
+"ProcessedTwitterFeed" in terms of their
respective parent feed (TwitterFeed).
+
+ use dataverse feeds;
+
+ drop feed ProcessedTwitterFeed if exists;
create secondary feed ProcessedTwitterFeed from feed TwitterFeed
apply function testlib#addFeatures;
+The `addFeatures` function is already provided in the release. Later
+in the tutorial we will explain how this function or
+other functions can be added to the system.
+
####Lifecycle of a Feed####
-A feed is a logical artifact that is brought to life (i.e. its data flow
-is initiated) only when it is connected to a dataset using the connect
-feed AQL statement (Figure 7). Subsequent to a connect feed
+A feed is a logical artifact that is brought to life (i.e., its data flow
+is initiated) only when it is connected to a dataset using the `connect
+feed` AQL statement. Subsequent to a `connect feed`
statement, the feed is said to be in the connected state. Multiple
feeds can simultaneously be connected to a dataset such that the
contents of the dataset represent the union of the connected feeds.
@@ -226,26 +241,27 @@
and connected to a dataset at any time without impeding/interrupting
the flow of data along a connected ancestor feed.
+ use dataverse feeds;
+
connect feed ProcessedTwitterFeed to
dataset ProcessedTweets ;
disconnect feed ProcessedTwitterFeed from
dataset ProcessedTweets ;
-The connect feed statement above directs AsterixDB to persist
+The `connect feed` statement above directs AsterixDB to persist
the ProcessedTwitterFeed feed in the ProcessedTweets dataset.
If it is required (by the high-level application) to also retain the raw
tweets obtained from Twitter, the end user may additionally choose
-to connect TwitterFeed to a (different) dataset. Having a set of primary
+to connect TwitterFeed to a different dataset. Having a set of primary
and secondary feeds offers the flexibility to do so. Let us
assume that the application needs to persist TwitterFeed and that,
-to do so, the end user makes another use of the connect feed statement.
+to do so, the end user makes another use of the `connect feed` statement.
A logical view of the continuous flow of data established by
-connecting the feeds to their respective target datasets is shown in
-Figure 8.
+connecting the feeds to their respective target datasets.
The flow of data from a feed into a dataset can be terminated
-explicitly by use of the disconnect feed statement.
+explicitly by use of the `disconnect feed` statement.
Disconnecting a feed from a particular dataset does not interrupt
the flow of data from the feed to any other dataset(s), nor does it
impact other connected feeds in the lineage.
@@ -254,11 +270,11 @@
Multiple feeds may be concurrently operational on an AsterixDB
cluster, each competing for resources (CPU cycles, network bandwidth,
disk IO) to maintain pace with their respective data sources.
-A data management system must be able to manage a set of concurrent
+As a data management system, AsterixDB is able to manage a set of concurrent
feeds and make dynamic decisions related to the allocation of
resources, resolving resource bottlenecks and the handling of failures.
Each feed has its own set of constraints, influenced largely
-by the nature of its data source and the application(s) that intend
+by the nature of its data source and the applications that intend
to consume and process the ingested data. Consider an application
that intends to discover the trending topics on Twitter by analyzing
the ProcessedTwitterFeed feed. Losing a few tweets may be
@@ -271,15 +287,12 @@
policy that is expressed as a collection of parameters and associated
values. An ingestion policy dictates the runtime behavior of
the feed in response to resource bottlenecks and failures. AsterixDB provides
-a list of policy parameters (Table 1) that help customize the
+a list of policy parameters that help customize the
system’s runtime behavior when handling excess records. AsterixDB
provides a set of built-in policies, each constructed by setting
appropriate value(s) for the policy parameter(s) from the table below.
-
-
####Policy Parameters
-
- *excess.records.spill*: Set to true if records that cannot be processed by an operator for lack of resources (referred to as excess records hereafter) should be persisted to the local disk for deferred processing. (Default: false)
@@ -293,15 +306,16 @@
- *recover.soft.failure*: Set to true if the feed must attempt to survive a hardware failures (loss of AsterixDB node(s)). A false value permits the early termination of a feed in the event of a hardware failure (Default: false)
-Note that the end user may choose to form a custom policy. E.g.
+Note that the end user may choose to form a custom policy. For example,
it is possible in AsterixDB to create a custom policy that spills excess
records to disk and subsequently resorts to throttling if the
spillage crosses a configured threshold. In all cases, the desired
-ingestion policy is specified as part of the connect feed statement
-(Figure 9) or else the ‘Basic’ policy will be chosen as the default.
+ingestion policy is specified as part of the `connect feed` statement
+or else the "Basic" policy will be chosen as the default.
It is worth noting that a feed can be connected to a dataset at any
time, which is independent from other related feeds in the hierarchy.
+ use dataverse feeds;
connect feed TwitterFeed to dataset Tweets
using policy Basic ;
@@ -309,7 +323,7 @@
## <a id="WritingAnExternalUDF">Writing an External UDF</a> ###
-A Java UDF in AsterixDB is required to implement an prescribe interface. We shall next write a basic UDF that extracts the hashtags contained in the tweet's text and appends each into an unordered list. The list is added as an additional attribute to the tweet to form the augment version - ProcessedTweet.
+A Java UDF in AsterixDB is required to implement an interface. We shall next write a basic UDF that extracts the hashtags contained in the tweet's text and appends each into an unordered list. The list is added as an additional attribute to the tweet to form the augment version - ProcessedTweet.
package edu.uci.ics.asterix.external.library;
@@ -366,8 +380,9 @@
We need to install our Java UDF so that we may use it in AQL statements/queries. An AsterixDB library has a pre-defined structure which is as follows.
-- jar file: A jar file that would contain the class files for your UDF source code.
-- library descriptor.xml: This is a descriptor that provide meta-information about the library.
+ - A jar file, which contains the class files for your UDF source code.
+
+ - File `descriptor.xml`, which is a descriptor with meta-information about the library.
<externalLibrary xmlns="library">
<language>JAVA</language>
@@ -392,18 +407,18 @@
$ unzip -l ./tweetlib.zip
Archive: ./tweetlib.zip
- Length Date Time Name
- -------- ---- ---- ----
- 760817 04-23-14 17:16 hash-tags.jar
- 405 04-23-14 17:16 tweet.xml
- -------- -------
- 761222 2 files
+
+ Length Date Time Name
+ -------- ---- ---- ----
+ 760817 04-23-14 17:16 hash-tags.jar
+ 405 04-23-14 17:16 tweet.xml
+ -------- -------
+ 761222 2 files
###Installing an AsterixDB Library###
-We assume you have followed the [http://asterixdb.ics.uci.edu/documentation/install.html instructions] to set up a running AsterixDB instance. Let us refer your AsterixDB instance by the name "my_asterix".
-
+We assume you have followed the [installation instructions](../install.html) to set up a running AsterixDB instance. Let us refer your AsterixDB instance by the name "my_asterix".
- Step 1: Stop the AsterixDB instance if it is in the ACTIVE state.
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
Posted by "Jenkins (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Jenkins has posted comments on this change.
Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 2:
Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-notopic/221/
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
Posted by "Heri Ramampiaro (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Heri Ramampiaro has posted comments on this change.
Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3:
I have changed the content a bit so the name of the functions (UDFs) are consistent with the name used in the descriptor xml file. I have also updated the example code so that it will work with the current "master" version.
-heri
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
Posted by "Chen Li (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Chen Li has posted comments on this change.
Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 1:
Related Jira: https://issues.apache.org/jira/browse/ASTERIXDB-1074
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
Posted by "Chen Li (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Chen Li has posted comments on this change.
Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3:
Thanks, Heri. @Ian: do you have time to test the new UDF instructions?
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
Posted by "Ian Maxon (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Hello Jenkins,
I'd like you to reexamine a change. Please visit
https://asterix-gerrit.ics.uci.edu/359
to look at the new patch set (#2).
Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
polishing the feeds docs
Change-Id: I46420c770ab194190bf122965f5e7525893ed128
---
M asterix-doc/src/site/markdown/feeds/tutorial.md
1 file changed, 75 insertions(+), 60 deletions(-)
git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/59/359/2
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Change in asterixdb[master]: Updates - added new text on UDF factory and required Asterix...
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Change subject: Updates - added new text on UDF factory and required Asterix jars
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
Posted by "Heri Ramampiaro (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Heri Ramampiaro has posted comments on this change.
Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 2: Code-Review+1
(2 comments)
Hi,
I just added two comments related to the name of the process tweet function and "discarding" "unwanted" results...
(The last one is not necessary for this to pass the review:-))
Thanks,
-heri
https://asterix-gerrit.ics.uci.edu/#/c/359/2/asterix-doc/src/site/markdown/feeds/tutorial.md
File asterix-doc/src/site/markdown/feeds/tutorial.md:
Line 184: apply function testlib#processRawTweet;
I believe this is called "testlib#addHashTags" now. I have suggested changing it back to its original name (that is the same as used in this document), which makes more sense to me...
Line 377:
Minor: Maybe we could add a note stating that that sometime it might be useful to allow a function to return "null" or a user just do not want ingest a feed with certain result values. With the last version of the feeds (with my changes), this is supported...
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
Posted by "Chen Li (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Chen Li has posted comments on this change.
Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 1:
The statement "connect feed ProcessedTwitterFeed to
dataset ProcessedTweets ;" had the following error: "unable to create adapter java.lang.ClassNotFoundException: push_twitter [AlgebricksException]".
@Ian: please look into it.
I didn't check those instructions under "Writing an External UDF". I found some of the attribute names inconsistent with the attributes in the type definition.
Per our discussion, it will be better to move these instructions to a separate page.
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
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Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 2:
If the library feature is not well tested and documented, I don't think we can include it in the pre-VLDB release.
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
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Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3:
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
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Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3: Verified-1
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
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Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3:
If we cannot fix it quickly, we can skip it in this release.
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
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Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3: -Verified
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Change in asterixdb[master]: Updates - added new text on UDF factory and required Asterix...
Posted by "Heri Ramampiaro (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Hello Jenkins,
I'd like you to reexamine a change. Please visit
https://asterix-gerrit.ics.uci.edu/359
to look at the new patch set (#4).
Change subject: Updates - added new text on UDF factory and required Asterix jars
......................................................................
Updates - added new text on UDF factory and required Asterix jars
Change-Id: I46420c770ab194190bf122965f5e7525893ed128
---
M asterix-doc/src/site/markdown/feeds/tutorial.md
1 file changed, 323 insertions(+), 74 deletions(-)
git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/59/359/4
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
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Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 2: Verified+1
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
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Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 1:
Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-notopic/218/
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
Posted by "Chen Li (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
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Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 1:
I believe I have the latest master. We can do the test together.
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
Posted by "Chen Li (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
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Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3:
@Ian: Let me know if can verify the instructions. If needed, we can meet in Hawaii in a few days :-)
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
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Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 1: Verified-1
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Change in asterixdb[master]: polishing the feeds docs Change-Id: I46420c770ab194190bf...
Posted by "Ian Maxon (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
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Change subject: polishing the feeds docs Change-Id: I46420c770ab194190bf122965f5e7525893ed128
......................................................................
Patch Set 1:
Oh, that's strange. Was your instance reinstalled since the patch Raman submitted, that was merged on Sunday? That fixed the metadata issue that was causing that error for me.
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
Posted by "Heri Ramampiaro (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
Hello Jenkins,
I'd like you to reexamine a change. Please visit
https://asterix-gerrit.ics.uci.edu/359
to look at the new patch set (#3).
Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Updates to reflects the function names and new lib-namings
Change-Id: I46420c770ab194190bf122965f5e7525893ed128
---
M asterix-doc/src/site/markdown/feeds/tutorial.md
1 file changed, 308 insertions(+), 74 deletions(-)
git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/59/359/3
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
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Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3: Verified+1
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
Posted by "Ian Maxon (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
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Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3:
I can try (not in the mainland at the moment)
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Change in asterixdb[master]: Updates - added new text on UDF factory and required Asterix...
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Change subject: Updates - added new text on UDF factory and required Asterix jars
......................................................................
Patch Set 4:
Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-notopic/257/
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Change in asterixdb[master]: Updates - added new text on UDF factory and required Asterix...
Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.
abdullah alamoudi has posted comments on this change.
Change subject: Updates - added new text on UDF factory and required Asterix jars
......................................................................
Patch Set 4:
Yesterday, I received a set of questions from a user about external libraries and external functions. All the information needed can be found here.
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Change in asterixdb[master]: Updates to reflects the function names and new lib-namings
Posted by "Ian Maxon (Code Review)" <do...@asterix-gerrit.ics.uci.edu>.
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Change subject: Updates to reflects the function names and new lib-namings
......................................................................
Patch Set 3:
I think the function itself doesn't work either. The tutorial is still mixed up, but I followed a path I knew should work (create the secondary feed from the primary, applying #addHashTags), but it just barfs in the NC with this:
org.apache.asterix.common.exceptions.AsterixException: org.apache.hyracks.api.exceptions.HyracksDataException: org.apache.hyracks.api.exceptions.HyracksDataException: java.io.UTFDataFormatException: malformed input around byte 8
at org.apache.asterix.external.library.java.JObjectPointableVisitor.visit(JObjectPointableVisitor.java:84)
at org.apache.asterix.external.library.java.JObjectAccessors$JRecordAccessor.access(JObjectAccessors.java:489)
at org.apache.asterix.external.library.java.JObjectPointableVisitor.visit(JObjectPointableVisitor.java:64)
at org.apache.asterix.external.library.java.JObjectAccessors$JRecordAccessor.access(JObjectAccessors.java:475)
at org.apache.asterix.external.library.java.JObjectPointableVisitor.visit(JObjectPointableVisitor.java:64)
at org.apache.asterix.external.library.JavaFunctionHelper.setArgument(JavaFunctionHelper.java:112)
at org.apache.asterix.external.library.ExternalFunction.setArguments(ExternalFunction.java:95)
at org.apache.asterix.external.library.ExternalScalarFunction.evaluate(ExternalFunctionProvider.java:59)
...
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Change in asterixdb[master]: Updates - added new text on UDF factory and required Asterix...
Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.
abdullah alamoudi has posted comments on this change.
Change subject: Updates - added new text on UDF factory and required Asterix jars
......................................................................
Patch Set 4: Code-Review+1
I think this should be merged.
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