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http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/FeedSchedule.png ---------------------------------------------------------------------- diff --git a/content/0.11/FeedSchedule.png b/content/0.11/FeedSchedule.png new file mode 100644 index 0000000..105c6b1 Binary files /dev/null and b/content/0.11/FeedSchedule.png differ http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/HDFSMirroring.html ---------------------------------------------------------------------- diff --git a/content/0.11/HDFSMirroring.html b/content/0.11/HDFSMirroring.html new file mode 100644 index 0000000..bff8aa8 --- /dev/null +++ b/content/0.11/HDFSMirroring.html @@ -0,0 +1,118 @@ +<!DOCTYPE html> +<!-- + | Generated by Apache Maven Doxia at 2018-03-12 + | Rendered using Apache Maven Fluido Skin 1.3.0 +--> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> + <head> + <meta charset="UTF-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="Date-Revision-yyyymmdd" content="20180312" /> + <meta http-equiv="Content-Language" content="en" /> + <title>Falcon - HDFS mirroring Extension</title> + <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" /> + <link rel="stylesheet" href="./css/site.css" /> + <link rel="stylesheet" href="./css/print.css" media="print" /> + + + <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script> + + + +<script type="text/javascript">$( document ).ready( function() { $( '.carousel' ).carousel( { interval: 3500 } ) } );</script> + + </head> + <body class="topBarDisabled"> + + + + + <div class="container"> + <div id="banner"> + <div class="pull-left"> + <div id="bannerLeft"> + <img src="images/falcon-logo.png" alt="Apache Falcon" width="200px" height="45px"/> + </div> + </div> + <div class="pull-right"> </div> + <div class="clear"><hr/></div> + </div> + + <div id="breadcrumbs"> + <ul class="breadcrumb"> + + + <li class=""> + <a href="index.html" title="Falcon"> + Falcon</a> + </li> + <li class="divider ">/</li> + <li class="">HDFS mirroring Extension</li> + + + + <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li> <li class="divider pull-right">|</li> + <li id="projectVersion" class="pull-right">Version: 0.11</li> + + </ul> + </div> + + + + <div id="bodyColumn" > + + <div class="section"> +<h2>HDFS mirroring Extension<a name="HDFS_mirroring_Extension"></a></h2></div> +<div class="section"> +<h3>Overview<a name="Overview"></a></h3> +<p>Falcon supports HDFS mirroring extension to replicate data from source cluster to destination cluster. This extension implements replicating arbitrary directories on HDFS and piggy backs on replication solution in Falcon which uses the <a href="./DistCp.html">DistCp</a> tool. It also allows users to replicate data from on-premise to cloud, either Azure WASB or S3.</p></div> +<div class="section"> +<h3>Use Case<a name="Use_Case"></a></h3> +<p>* Copy directories between HDFS clusters with out dated partitions * Archive directories from HDFS to Cloud. Ex: S3, Azure WASB</p></div> +<div class="section"> +<h3>Limitations<a name="Limitations"></a></h3> +<p>As the data volume and number of files grow, this can get inefficient.</p></div> +<div class="section"> +<h3>Usage<a name="Usage"></a></h3></div> +<div class="section"> +<h4>Setup source and destination clusters<a name="Setup_source_and_destination_clusters"></a></h4> +<div class="source"> +<pre> + $FALCON_HOME/bin/falcon entity -submit -type cluster -file /cluster/definition.xml + +</pre></div></div> +<div class="section"> +<h4>HDFS mirroring extension properties<a name="HDFS_mirroring_extension_properties"></a></h4> +<p>Extension artifacts are expected to be installed on HDFS at the path specified by "extension.store.uri" in startup properties. hdfs-mirroring-properties.json file located at "<extension.store.uri>/hdfs-mirroring/META/hdfs-mirroring-properties.json" lists all the required and optional parameters/arguments for scheduling HDFS mirroring job.</p></div> +<div class="section"> +<h4>Submit and schedule HDFS mirroring extension<a name="Submit_and_schedule_HDFS_mirroring_extension"></a></h4> +<div class="source"> +<pre> + $FALCON_HOME/bin/falcon extension -submitAndSchedule -extensionName hdfs-mirroring -file /process/definition.xml + +</pre></div> +<p>Please Refer to <a href="./Falconcli/FalconCLI.html">Falcon CLI</a> and <a href="./Restapi/ResourceList.html">REST API</a> for more details on usage of CLI and REST API's.</p></div> + </div> + </div> + + <hr/> + + <footer> + <div class="container"> + <div class="row span12">Copyright © 2013-2018 + <a href="http://www.apache.org";>Apache Software Foundation</a>. + All Rights Reserved. + + </div> + + + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> +</html> http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/HdfsSnapshotMirroring.html ---------------------------------------------------------------------- diff --git a/content/0.11/HdfsSnapshotMirroring.html b/content/0.11/HdfsSnapshotMirroring.html new file mode 100644 index 0000000..63f6d3e --- /dev/null +++ b/content/0.11/HdfsSnapshotMirroring.html @@ -0,0 +1,181 @@ +<!DOCTYPE html> +<!-- + | Generated by Apache Maven Doxia at 2018-03-12 + | Rendered using Apache Maven Fluido Skin 1.3.0 +--> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> + <head> + <meta charset="UTF-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="Date-Revision-yyyymmdd" content="20180312" /> + <meta http-equiv="Content-Language" content="en" /> + <title>Falcon - HDFS Snapshot based Mirroring</title> + <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" /> + <link rel="stylesheet" href="./css/site.css" /> + <link rel="stylesheet" href="./css/print.css" media="print" /> + + + <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script> + + + +<script type="text/javascript">$( document ).ready( function() { $( '.carousel' ).carousel( { interval: 3500 } ) } );</script> + + </head> + <body class="topBarDisabled"> + + + + + <div class="container"> + <div id="banner"> + <div class="pull-left"> + <div id="bannerLeft"> + <img src="images/falcon-logo.png" alt="Apache Falcon" width="200px" height="45px"/> + </div> + </div> + <div class="pull-right"> </div> + <div class="clear"><hr/></div> + </div> + + <div id="breadcrumbs"> + <ul class="breadcrumb"> + + + <li class=""> + <a href="index.html" title="Falcon"> + Falcon</a> + </li> + <li class="divider ">/</li> + <li class="">HDFS Snapshot based Mirroring</li> + + + + <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li> <li class="divider pull-right">|</li> + <li id="projectVersion" class="pull-right">Version: 0.11</li> + + </ul> + </div> + + + + <div id="bodyColumn" > + + <div class="section"> +<h2>HDFS Snapshot based Mirroring<a name="HDFS_Snapshot_based_Mirroring"></a></h2></div> +<div class="section"> +<h3>Overview<a name="Overview"></a></h3> +<p>HDFS snapshots are very cost effective to create ( cost is O(1) excluding iNode lookup time). Once created, it is very efficient to find modifications relative to a snapshot and copy over these modifications for disaster recovery (DR). This makes for cost effective HDFS mirroring.</p></div> +<div class="section"> +<h3>Prerequisites<a name="Prerequisites"></a></h3> +<p>Following is the prerequisite to use HDFS Snapshot based Mirrroring.</p> +<p></p> +<ul> +<li>Hadoop version 2.7.0 or higher.</li> +<li>User submitting and scheduling falcon snapshot based mirroring job should have permission to create and manage snapshots on both source and target directories.</li></ul></div> +<div class="section"> +<h3>Use Case<a name="Use_Case"></a></h3> +<p>Create and manage snapshots on source/target directories. Mirror data from source to target for disaster recovery using these snapshots. Perform retention on the snapshots created on source and target.</p></div> +<div class="section"> +<h3>Usage<a name="Usage"></a></h3></div> +<div class="section"> +<h4>Setup<a name="Setup"></a></h4> +<p></p> +<ul> +<li>Submit a source cluster and target cluster entities to Falcon.</li></ul> +<div class="source"> +<pre> + $FALCON_HOME/bin/falcon entity -submit -type cluster -file source-cluster-definition.xml + $FALCON_HOME/bin/falcon entity -submit -type cluster -file target-cluster-definition.xml + +</pre></div> +<p></p> +<ul> +<li>Ensure that source directory on source cluster and target directory on target cluster exists.</li> +<li>Ensure that these dirs are snapshot-able by user submitting extension. You can find more <a class="externalLink" href="https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HdfsSnapshots.html";>information on snapshots here</a>.</li></ul></div> +<div class="section"> +<h4>HDFS Snapshot based mirroring extension properties<a name="HDFS_Snapshot_based_mirroring_extension_properties"></a></h4> +<p>Extension artifacts are expected to be installed on HDFS at the path specified by "extension.store.uri" in startup properties. hdfs-snapshot-mirroring-properties.json file located at "<extension.store.uri>/hdfs-snapshot-mirroring/META/hdfs-snapshot-mirroring-properties.json" lists all the required and optional parameters/arguments for scheduling the mirroring job.</p> +<p>Here is a sample set of properties,</p> +<div class="source"> +<pre> + ## Job Properties + jobName=hdfs-snapshot-test + jobClusterName=backupCluster + jobValidityStart=2016-01-01T00:00Z + jobValidityEnd=2016-04-01T00:00Z + jobFrequency=hours(12) + jobTimezone=UTC + jobTags=consumer=consu...@xyz.com + jobRetryPolicy=periodic + jobRetryDelay=minutes(30) + jobRetryAttempts=3 + + ## Job owner + jobAclOwner=ambari-qa + jobAclGroup=users + jobAclPermission=* + + ## Source information + sourceCluster=primaryCluster + sourceSnapshotDir=/apps/falcon/snapshots/source/ + sourceSnapshotRetentionPolicy=delete + sourceSnapshotRetentionAgeLimit=days(15) + sourceSnapshotRetentionNumber=10 + + ## Target information + targetCluster=backupCluster + targetSnapshotDir=/apps/falcon/snapshots/target/ + targetSnapshotRetentionPolicy=delete + targetSnapshotRetentionAgeLimit=months(6) + targetSnapshotRetentionNumber=20 + + ## Distcp properties + distcpMaxMaps=1 + distcpMapBandwidth=100 + tdeEncryptionEnabled=false + +</pre></div> +<p>The above properties ensure Falcon hdfs snapshot based mirroring extension does the following every 12 hours.</p> +<ul> +<li>Create snapshot on dir /apps/falcon/snapshots/source/ on primaryCluster.</li> +<li>DistCP data from /apps/falcon/snapshots/source/ on primaryCluster to /apps/falcon/snapshots/target/ on backupCluster.</li> +<li>Create snapshot on dir /apps/falcon/snapshots/target/ on backupCluster.</li> +<li>Perform retention job on source and target. +<ul> +<li>Maintain at least N latest snapshots and delete all other snapshots older than specified age limit.</li> +<li>Today, only "delete" policy is supported for snapshot retention.</li></ul></li></ul> +<p><b>Note:</b> When TDE encryption is enabled on source/target directories, DistCP ignores the snapshots and treats it like a regular replication. While user may not get the performance benefit of using snapshot based DistCP, the extension is still useful for creating and maintaining snapshots.</p></div> +<div class="section"> +<h4>Submit and schedule HDFS snapshot mirroring extension<a name="Submit_and_schedule_HDFS_snapshot_mirroring_extension"></a></h4> +<p>User can submit extension using CLI or RestAPI. CLI command looks as follows</p> +<div class="source"> +<pre> + $FALCON_HOME/bin/falcon extension -submitAndSchedule -extensionName hdfs-snapshot-mirroring -file propeties-file.txt + +</pre></div> +<p>Please Refer to <a href="./Falconcli/FalconCLI.html">Falcon CLI</a> and <a href="./Restapi/ResourceList.html">REST API</a> for more details on usage of CLI and REST API's.</p></div> + </div> + </div> + + <hr/> + + <footer> + <div class="container"> + <div class="row span12">Copyright © 2013-2018 + <a href="http://www.apache.org";>Apache Software Foundation</a>. + All Rights Reserved. + + </div> + + + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> +</html> http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/HiveIntegration.html ---------------------------------------------------------------------- diff --git a/content/0.11/HiveIntegration.html b/content/0.11/HiveIntegration.html new file mode 100644 index 0000000..3d5c995 --- /dev/null +++ b/content/0.11/HiveIntegration.html @@ -0,0 +1,453 @@ +<!DOCTYPE html> +<!-- + | Generated by Apache Maven Doxia at 2018-03-12 + | Rendered using Apache Maven Fluido Skin 1.3.0 +--> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> + <head> + <meta charset="UTF-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="Date-Revision-yyyymmdd" content="20180312" /> + <meta http-equiv="Content-Language" content="en" /> + <title>Falcon - Hive Integration</title> + <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" /> + <link rel="stylesheet" href="./css/site.css" /> + <link rel="stylesheet" href="./css/print.css" media="print" /> + + + <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script> + + + +<script type="text/javascript">$( document ).ready( function() { $( '.carousel' ).carousel( { interval: 3500 } ) } );</script> + + </head> + <body class="topBarDisabled"> + + + + + <div class="container"> + <div id="banner"> + <div class="pull-left"> + <div id="bannerLeft"> + <img src="images/falcon-logo.png" alt="Apache Falcon" width="200px" height="45px"/> + </div> + </div> + <div class="pull-right"> </div> + <div class="clear"><hr/></div> + </div> + + <div id="breadcrumbs"> + <ul class="breadcrumb"> + + + <li class=""> + <a href="index.html" title="Falcon"> + Falcon</a> + </li> + <li class="divider ">/</li> + <li class="">Hive Integration</li> + + + + <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li> <li class="divider pull-right">|</li> + <li id="projectVersion" class="pull-right">Version: 0.11</li> + + </ul> + </div> + + + + <div id="bodyColumn" > + + <div class="section"> +<h2>Hive Integration<a name="Hive_Integration"></a></h2></div> +<div class="section"> +<h3>Overview<a name="Overview"></a></h3> +<p>Falcon provides data management functions for feeds declaratively. It allows users to represent feed locations as time-based partition directories on HDFS containing files.</p> +<p>Hive provides a simple and familiar database like tabular model of data management to its users, which are backed by HDFS. It supports two classes of tables, managed tables and external tables.</p> +<p>Falcon allows users to represent feed location as Hive tables. Falcon supports both managed and external tables and provide data management services for tables such as replication, eviction, archival, etc. Falcon will notify HCatalog as a side effect of either acquiring, replicating or evicting a data set instance and adds the missing capability of HCatalog table replication.</p> +<p>In the near future, Falcon will allow users to express pipeline processing in Hive scripts apart from Pig and Oozie workflows.</p></div> +<div class="section"> +<h3>Assumptions<a name="Assumptions"></a></h3> +<p></p> +<ul> +<li>Date is a mandatory first-level partition for Hive tables +<ul> +<li>Data availability triggers are based on date pattern in Oozie</li></ul></li> +<li>Tables must be created in Hive prior to adding it as a Feed in Falcon. +<ul> +<li>Duplicating this in Falcon will create confusion on the real source of truth. Also propagating schema changes</li></ul></li></ul>between systems is a hard problem. +<ul> +<li>Falcon does not know about the encoding of the data and data should be in HCatalog supported format.</li></ul></div> +<div class="section"> +<h3>Configuration<a name="Configuration"></a></h3> +<p>Falcon provides a system level option to enable Hive integration. Falcon must be configured with an implementation for the catalog registry. The default implementation for Hive is shipped with Falcon.</p> +<div class="source"> +<pre> +catalog.service.impl=org.apache.falcon.catalog.HiveCatalogService + +</pre></div></div> +<div class="section"> +<h3>Incompatible changes<a name="Incompatible_changes"></a></h3> +<p>Falcon depends heavily on data-availability triggers for scheduling Falcon workflows. Oozie must support data-availability triggers based on HCatalog partition availability. This is only available in oozie 4.x.</p> +<p>Hence, Falcon for Hive support needs Oozie 4.x.</p></div> +<div class="section"> +<h3>Oozie Shared Library setup<a name="Oozie_Shared_Library_setup"></a></h3> +<p>Falcon post Hive integration depends heavily on the <a class="externalLink" href="http://oozie.apache.org/docs/4.0.1/WorkflowFunctionalSpec.html#a17_HDFS_Share_Libraries_for_Workflow_Applications_since_Oozie_2.3";>shared library feature of Oozie</a>. Since the sheer number of jars for HCatalog, Pig and Hive are in the many 10s in numbers, its quite daunting to redistribute the dependent jars from Falcon.</p> +<p><a class="externalLink" href="http://oozie.apache.org/docs/4.0.1/DG_QuickStart.html#Oozie_Share_Lib_Installation";>This is a one time effort in Oozie setup and is quite straightforward.</a></p></div> +<div class="section"> +<h3>Approach<a name="Approach"></a></h3></div> +<div class="section"> +<h4>Entity Changes<a name="Entity_Changes"></a></h4> +<p></p> +<ul> +<li>Cluster DSL will have an additional registry-interface section, specifying the endpoint for the</li></ul>HCatalog server. If this is absent, no HCatalog publication will be done from Falcon for this cluster. +<div class="source"> +<pre>thrift://hcatalog-server:port +</pre></div> +<p></p> +<ul> +<li>Feed DSL will allow users to specify the URI (location) for HCatalog tables as:</li></ul> +<div class="source"> +<pre>catalog:database_name:table_name#partitions(key=value?)* +</pre></div> +<p></p> +<ul> +<li>Failure to publish to HCatalog will be retried (configurable # of retires) with back off. Permanent failures</li></ul>after all the retries are exhausted will fail the Falcon workflow</div> +<div class="section"> +<h4>Eviction<a name="Eviction"></a></h4> +<p></p> +<ul> +<li>Falcon will construct DDL statements to filter candidate partitions eligible for eviction drop partitions</li> +<li>Falcon will construct DDL statements to drop the eligible partitions</li> +<li>Additionally, Falcon will nuke the data on HDFS for external tables</li></ul></div> +<div class="section"> +<h4>Replication<a name="Replication"></a></h4> +<p></p> +<ul> +<li>Falcon will use HCatalog (Hive) API to export the data for a given table and the partition,</li></ul>which will result in a data collection that includes metadata on the data's storage format, the schema, how the data is sorted, what table the data came from, and values of any partition keys from that table. +<ul> +<li>Falcon will use discp tool to copy the exported data collection into the secondary cluster into a staging</li></ul>directory used by Falcon. +<ul> +<li>Falcon will then import the data into HCatalog (Hive) using the HCatalog (Hive) API. If the specified table does</li></ul>not yet exist, Falcon will create it, using the information in the imported metadata to set defaults for the table such as schema, storage format, etc. +<ul> +<li>The partition is not complete and hence not visible to users until all the data is committed on the secondary</li></ul>cluster, (no dirty reads) +<ul> +<li>Data collection is staged by Falcon and retries for copy continues from where it left off.</li> +<li>Failure to register with Hive will be retired. After all the attempts are exhausted,</li></ul>the data will be cleaned up by Falcon.</div> +<div class="section"> +<h4>Security<a name="Security"></a></h4> +<p>The user owns all data managed by Falcon. Falcon runs as the user who submitted the feed. Falcon will authenticate with HCatalog as the end user who owns the entity and the data.</p> +<p>For Hive managed tables, the table may be owned by the end user or “hive”. For “hive” owned tables, user will have to configure the feed as “hive”.</p></div> +<div class="section"> +<h3>Load on HCatalog from Falcon<a name="Load_on_HCatalog_from_Falcon"></a></h3> +<p>It generally depends on the frequency of the feeds configured in Falcon and how often data is ingested, replicated, or processed.</p></div> +<div class="section"> +<h3>User Impact<a name="User_Impact"></a></h3> +<p></p> +<ul> +<li>There should not be any impact to user due to this integration</li> +<li>Falcon will be fully backwards compatible</li> +<li>Users have a choice to either choose storage based on files on HDFS as they do today or use HCatalog for</li></ul>accessing the data in tables</div> +<div class="section"> +<h3>Known Limitations<a name="Known_Limitations"></a></h3></div> +<div class="section"> +<h4>Oozie<a name="Oozie"></a></h4> +<p></p> +<ul> +<li>Falcon with Hadoop 1.x requires copying guava jars manually to sharelib in oozie. Hadoop 2.x ships this.</li> +<li>hcatalog-pig-adapter needs to be copied manually to oozie sharelib.</li></ul> +<div class="source"> +<pre> +bin/hadoop dfs -copyFromLocal $LFS/share/lib/hcatalog/hcatalog-pig-adapter-0.5.0-incubating.jar share/lib/hcatalog + +</pre></div> +<p></p> +<ul> +<li>Oozie 4.x with Hadoop-2.x</li></ul>Replication jobs are submitted to oozie on the destination cluster. Oozie runs a table export job on RM on source cluster. Oozie server on the target cluster must be configured with source hadoop configs else jobs fail with errors on secure and non-secure clusters as below: +<div class="source"> +<pre> +org.apache.hadoop.security.token.SecretManager$InvalidToken: Password not found for ApplicationAttempt appattempt_1395965672651_0010_000002 + +</pre></div> +<p>Make sure all oozie servers that falcon talks to has the hadoop configs configured in oozie-site.xml</p> +<div class="source"> +<pre> +<property> + <name>oozie.service.HadoopAccessorService.hadoop.configurations</name> + <value>*=/etc/hadoop/conf,arpit-new-falcon-1.cs1cloud.internal:8020=/etc/hadoop-1,arpit-new-falcon-1.cs1cloud.internal:8032=/etc/hadoop-1,arpit-new-falcon-2.cs1cloud.internal:8020=/etc/hadoop-2,arpit-new-falcon-2.cs1cloud.internal:8032=/etc/hadoop-2,arpit-new-falcon-5.cs1cloud.internal:8020=/etc/hadoop-3,arpit-new-falcon-5.cs1cloud.internal:8032=/etc/hadoop-3</value> + <description> + Comma separated AUTHORITY=HADOOP_CONF_DIR, where AUTHORITY is the HOST:PORT of + the Hadoop service (JobTracker, HDFS). The wildcard '*' configuration is + used when there is no exact match for an authority. The HADOOP_CONF_DIR contains + the relevant Hadoop *-site.xml files. If the path is relative is looked within + the Oozie configuration directory; though the path can be absolute (i.e. to point + to Hadoop client conf/ directories in the local filesystem. + </description> + </property> + +</pre></div></div> +<div class="section"> +<h4>Hive<a name="Hive"></a></h4> +<p></p> +<ul> +<li>Dated Partitions</li></ul>Falcon does not work well when table partition contains multiple dated columns. Falcon only works with a single dated partition. This is being tracked in FALCON-357 which is a limitation in Oozie. +<div class="source"> +<pre> +catalog:default:table4#year=${YEAR};month=${MONTH};day=${DAY};hour=${HOUR};minute=${MINUTE} + +</pre></div> +<p></p> +<ul> +<li><a class="externalLink" href="https://issues.apache.org/jira/browse/HIVE-5550";>Hive table import fails for tables created with default text and sequence file formats using HCatalog API</a></li></ul>For some arcane reason, hive substitutes the output format for text and sequence to be prefixed with Hive. Hive table import fails since it compares against the input and output formats of the source table and they are different. Say, a table was created with out specifying the file format, it defaults to: +<div class="source"> +<pre> +fileFormat=TextFile, inputformat=org.apache.hadoop.mapred.TextInputFormat, outputformat=org.apache.hadoop.hive.ql.io.IgnoreKeyTextOutputFormat + +</pre></div> +<p>But, when hive fetches the table from the metastore, it replaces the output format with org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat and the comparison between source and target table fails.</p> +<div class="source"> +<pre> +org.apache.hadoop.hive.ql.parse.ImportSemanticAnalyzer#checkTable + // check IF/OF/Serde + String existingifc = table.getInputFormatClass().getName(); + String importedifc = tableDesc.getInputFormat(); + String existingofc = table.getOutputFormatClass().getName(); + String importedofc = tableDesc.getOutputFormat(); + if ((!existingifc.equals(importedifc)) + || (!existingofc.equals(importedofc))) { + throw new SemanticException( + ErrorMsg.INCOMPATIBLE_SCHEMA + .getMsg(" Table inputformat/outputformats do not match")); + } + +</pre></div> +<p>The above is not an issue with Hive 0.13.</p></div> +<div class="section"> +<h3>Hive Examples<a name="Hive_Examples"></a></h3> +<p>Following is an example entity configuration for lifecycle management functions for tables in Hive.</p></div> +<div class="section"> +<h4>Hive Table Lifecycle Management - Replication and Retention<a name="Hive_Table_Lifecycle_Management_-_Replication_and_Retention"></a></h4></div> +<div class="section"> +<h5>Primary Cluster<a name="Primary_Cluster"></a></h5> +<div class="source"> +<pre> +<?xml version="1.0"?> +<!-- + Primary cluster configuration for demo vm + --> +<cluster colo="west-coast" description="Primary Cluster" + name="primary-cluster" + xmlns="uri:falcon:cluster:0.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> + <interfaces> + <interface type="readonly" endpoint="hftp://localhost:10070" + version="1.1.1" /> + <interface type="write" endpoint="hdfs://localhost:10020" + version="1.1.1" /> + <interface type="execute" endpoint="localhost:10300" + version="1.1.1" /> + <interface type="workflow" endpoint="http://localhost:11010/oozie/" + version="4.0.1" /> + <interface type="registry" endpoint="thrift://localhost:19083" + version="0.11.0" /> + <interface type="messaging" endpoint="tcp://localhost:61616?daemon=true" + version="5.4.3" /> + </interfaces> + <locations> + <location name="staging" path="/apps/falcon/staging" /> + <location name="temp" path="/tmp" /> + <location name="working" path="/apps/falcon/working" /> + </locations> +</cluster> + +</pre></div></div> +<div class="section"> +<h5>BCP Cluster<a name="BCP_Cluster"></a></h5> +<div class="source"> +<pre> +<?xml version="1.0"?> +<!-- + BCP cluster configuration for demo vm + --> +<cluster colo="east-coast" description="BCP Cluster" + name="bcp-cluster" + xmlns="uri:falcon:cluster:0.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> + <interfaces> + <interface type="readonly" endpoint="hftp://localhost:20070" + version="1.1.1" /> + <interface type="write" endpoint="hdfs://localhost:20020" + version="1.1.1" /> + <interface type="execute" endpoint="localhost:20300" + version="1.1.1" /> + <interface type="workflow" endpoint="http://localhost:11020/oozie/" + version="4.0.1" /> + <interface type="registry" endpoint="thrift://localhost:29083" + version="0.11.0" /> + <interface type="messaging" endpoint="tcp://localhost:61616?daemon=true" + version="5.4.3" /> + </interfaces> + <locations> + <location name="staging" path="/apps/falcon/staging" /> + <location name="temp" path="/tmp" /> + <location name="working" path="/apps/falcon/working" /> + </locations> +</cluster> + +</pre></div></div> +<div class="section"> +<h5>Feed with replication and eviction policy<a name="Feed_with_replication_and_eviction_policy"></a></h5> +<div class="source"> +<pre> +<?xml version="1.0"?> +<!-- + Replicating Hourly customer table from primary to secondary cluster. + --> +<feed description="Replicating customer table feed" name="customer-table-replicating-feed" + xmlns="uri:falcon:feed:0.1"> + <frequency>hours(1)</frequency> + <timezone>UTC</timezone> + + <clusters> + <cluster name="primary-cluster" type="source"> + <validity start="2013-09-24T00:00Z" end="2013-10-26T00:00Z"/> + <retention limit="hours(2)" action="delete"/> + </cluster> + <cluster name="bcp-cluster" type="target"> + <validity start="2013-09-24T00:00Z" end="2013-10-26T00:00Z"/> + <retention limit="days(30)" action="delete"/> + + <table uri="catalog:tgt_demo_db:customer_bcp#ds=${YEAR}-${MONTH}-${DAY}-${HOUR}" /> + </cluster> + </clusters> + + <table uri="catalog:src_demo_db:customer_raw#ds=${YEAR}-${MONTH}-${DAY}-${HOUR}" /> + + <ACL owner="seetharam" group="users" permission="0755"/> + <schema location="" provider="hcatalog"/> +</feed> + +</pre></div></div> +<div class="section"> +<h4>Hive Table used in Processing Pipelines<a name="Hive_Table_used_in_Processing_Pipelines"></a></h4></div> +<div class="section"> +<h5>Primary Cluster<a name="Primary_Cluster"></a></h5> +<p>The cluster definition from the lifecycle example can be used.</p></div> +<div class="section"> +<h5>Input Feed<a name="Input_Feed"></a></h5> +<div class="source"> +<pre> +<?xml version="1.0"?> +<feed description="clicks log table " name="input-table" xmlns="uri:falcon:feed:0.1"> + <groups>online,bi</groups> + <frequency>hours(1)</frequency> + <timezone>UTC</timezone> + + <clusters> + <cluster name="##cluster##" type="source"> + <validity start="2010-01-01T00:00Z" end="2012-04-21T00:00Z"/> + <retention limit="hours(24)" action="delete"/> + </cluster> + </clusters> + + <table uri="catalog:falcon_db:input_table#ds=${YEAR}-${MONTH}-${DAY}-${HOUR}" /> + + <ACL owner="testuser" group="group" permission="0x755"/> + <schema location="/schema/clicks" provider="protobuf"/> +</feed> + +</pre></div></div> +<div class="section"> +<h5>Output Feed<a name="Output_Feed"></a></h5> +<div class="source"> +<pre> +<?xml version="1.0"?> +<feed description="clicks log identity table" name="output-table" xmlns="uri:falcon:feed:0.1"> + <groups>online,bi</groups> + <frequency>hours(1)</frequency> + <timezone>UTC</timezone> + + <clusters> + <cluster name="##cluster##" type="source"> + <validity start="2010-01-01T00:00Z" end="2012-04-21T00:00Z"/> + <retention limit="hours(24)" action="delete"/> + </cluster> + </clusters> + + <table uri="catalog:falcon_db:output_table#ds=${YEAR}-${MONTH}-${DAY}-${HOUR}" /> + + <ACL owner="testuser" group="group" permission="0x755"/> + <schema location="/schema/clicks" provider="protobuf"/> +</feed> + +</pre></div></div> +<div class="section"> +<h5>Process<a name="Process"></a></h5> +<div class="source"> +<pre> +<?xml version="1.0"?> +<process name="##processName##" xmlns="uri:falcon:process:0.1"> + <clusters> + <cluster name="##cluster##"> + <validity end="2012-04-22T00:00Z" start="2012-04-21T00:00Z"/> + </cluster> + </clusters> + + <parallel>1</parallel> + <order>FIFO</order> + <frequency>days(1)</frequency> + <timezone>UTC</timezone> + + <inputs> + <input end="today(0,0)" start="today(0,0)" feed="input-table" name="input"/> + </inputs> + + <outputs> + <output instance="now(0,0)" feed="output-table" name="output"/> + </outputs> + + <properties> + <property name="blah" value="blah"/> + </properties> + + <workflow engine="pig" path="/falcon/test/apps/pig/table-id.pig"/> + + <retry policy="periodic" delay="minutes(10)" attempts="3"/> +</process> + +</pre></div></div> +<div class="section"> +<h5>Pig Script<a name="Pig_Script"></a></h5> +<div class="source"> +<pre> +A = load '$input_database.$input_table' using org.apache.hcatalog.pig.HCatLoader(); +B = FILTER A BY $input_filter; +C = foreach B generate id, value; +store C into '$output_database.$output_table' USING org.apache.hcatalog.pig.HCatStorer('$output_dataout_partitions'); + +</pre></div></div> + </div> + </div> + + <hr/> + + <footer> + <div class="container"> + <div class="row span12">Copyright © 2013-2018 + <a href="http://www.apache.org";>Apache Software Foundation</a>. + All Rights Reserved. + + </div> + + + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> +</html> http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/HiveMirroring.html ---------------------------------------------------------------------- diff --git a/content/0.11/HiveMirroring.html b/content/0.11/HiveMirroring.html new file mode 100644 index 0000000..041f3d6 --- /dev/null +++ b/content/0.11/HiveMirroring.html @@ -0,0 +1,148 @@ +<!DOCTYPE html> +<!-- + | Generated by Apache Maven Doxia at 2018-03-12 + | Rendered using Apache Maven Fluido Skin 1.3.0 +--> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> + <head> + <meta charset="UTF-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="Date-Revision-yyyymmdd" content="20180312" /> + <meta http-equiv="Content-Language" content="en" /> + <title>Falcon - Hive Mirroring</title> + <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" /> + <link rel="stylesheet" href="./css/site.css" /> + <link rel="stylesheet" href="./css/print.css" media="print" /> + + + <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script> + + + +<script type="text/javascript">$( document ).ready( function() { $( '.carousel' ).carousel( { interval: 3500 } ) } );</script> + + </head> + <body class="topBarDisabled"> + + + + + <div class="container"> + <div id="banner"> + <div class="pull-left"> + <div id="bannerLeft"> + <img src="images/falcon-logo.png" alt="Apache Falcon" width="200px" height="45px"/> + </div> + </div> + <div class="pull-right"> </div> + <div class="clear"><hr/></div> + </div> + + <div id="breadcrumbs"> + <ul class="breadcrumb"> + + + <li class=""> + <a href="index.html" title="Falcon"> + Falcon</a> + </li> + <li class="divider ">/</li> + <li class="">Hive Mirroring</li> + + + + <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li> <li class="divider pull-right">|</li> + <li id="projectVersion" class="pull-right">Version: 0.11</li> + + </ul> + </div> + + + + <div id="bodyColumn" > + + <div class="section"> +<h2>Hive Mirroring<a name="Hive_Mirroring"></a></h2></div> +<div class="section"> +<h3>Overview<a name="Overview"></a></h3> +<p>Falcon provides feature to replicate Hive metadata and data events from source cluster to destination cluster. This is supported for both secure and unsecure cluster through Falcon extensions.</p></div> +<div class="section"> +<h3>Prerequisites<a name="Prerequisites"></a></h3> +<p>Following is the prerequisites to use Hive Mirrroring</p> +<p></p> +<ul> +<li><b>Hive 1.2.0+</b></li> +<li><b>Oozie 4.2.0+</b></li></ul> +<p><b>Note:</b> Set following properties in hive-site.xml for replicating the Hive events on source and destination Hive cluster:</p> +<div class="source"> +<pre> + <property> + <name>hive.metastore.event.listeners</name> + <value>org.apache.hive.hcatalog.listener.DbNotificationListener</value> + <description>event listeners that are notified of any metastore changes</description> + </property> + + <property> + <name>hive.metastore.dml.events</name> + <value>true</value> + </property> + +</pre></div></div> +<div class="section"> +<h3>Use Case<a name="Use_Case"></a></h3> +<p>* Replicate data/metadata of Hive DB & table from source to target cluster</p></div> +<div class="section"> +<h3>Limitations<a name="Limitations"></a></h3> +<p>* Currently Hive doesn't support create database, roles, views, offline tables, direct HDFS writes without registering with metadata and Database/Table name mapping replication events. Hence Hive mirroring extension cannot be used to replicate above mentioned events between warehouses.</p></div> +<div class="section"> +<h3>Usage<a name="Usage"></a></h3></div> +<div class="section"> +<h4>Bootstrap<a name="Bootstrap"></a></h4> +<p>Perform initial bootstrap of Table and Database from source cluster to destination cluster</p> +<ul> +<li><b>Database Bootstrap</b></li></ul>For bootstrapping DB replication, first destination DB should be created. This step is expected, since DB replication definitions can be set up by users only on pre-existing DB’s. Second, Export all tables in the source db and Import it in the destination db, as described in Table bootstrap. +<p></p> +<ul> +<li><b>Table Bootstrap</b></li></ul>For bootstrapping table replication, essentially after having turned on the DbNotificationListener on the source db, perform an Export of the table, distcp the Export over to the destination warehouse and do an Import over there. Check the following <a class="externalLink" href="https://cwiki.apache.org/confluence/display/Hive/LanguageManual+ImportExport";>Hive Export-Import</a> for syntax details and examples. This will set up the destination table so that the events on the source cluster that modify the table will then be replicated.</div> +<div class="section"> +<h4>Setup source and destination clusters<a name="Setup_source_and_destination_clusters"></a></h4> +<div class="source"> +<pre> + $FALCON_HOME/bin/falcon entity -submit -type cluster -file /cluster/definition.xml + +</pre></div></div> +<div class="section"> +<h4>Hive mirroring extension properties<a name="Hive_mirroring_extension_properties"></a></h4> +<p>Extension artifacts are expected to be installed on HDFS at the path specified by "extension.store.uri" in startup properties. hive-mirroring-properties.json file located at "<extension.store.uri>/hive-mirroring/META/hive-mirroring-properties.json" lists all the required and optional parameters/arguments for scheduling Hive mirroring job.</p></div> +<div class="section"> +<h4>Submit and schedule Hive mirroring extension<a name="Submit_and_schedule_Hive_mirroring_extension"></a></h4> +<div class="source"> +<pre> + $FALCON_HOME/bin/falcon extension -submitAndSchedule -extensionName hive-mirroring -file /process/definition.xml + +</pre></div> +<p>Please Refer to <a href="./Falconcli/FalconCLI.html">Falcon CLI</a> and <a href="./Restapi/ResourceList.html">REST API</a> for more details on usage of CLI and REST API's.</p></div> + </div> + </div> + + <hr/> + + <footer> + <div class="container"> + <div class="row span12">Copyright © 2013-2018 + <a href="http://www.apache.org";>Apache Software Foundation</a>. + All Rights Reserved. + + </div> + + + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> +</html> http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/ImportExport.html ---------------------------------------------------------------------- diff --git a/content/0.11/ImportExport.html b/content/0.11/ImportExport.html new file mode 100644 index 0000000..618d783 --- /dev/null +++ b/content/0.11/ImportExport.html @@ -0,0 +1,294 @@ +<!DOCTYPE html> +<!-- + | Generated by Apache Maven Doxia at 2018-03-12 + | Rendered using Apache Maven Fluido Skin 1.3.0 +--> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> + <head> + <meta charset="UTF-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="Date-Revision-yyyymmdd" content="20180312" /> + <meta http-equiv="Content-Language" content="en" /> + <title>Falcon - Falcon Data Import and Export</title> + <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" /> + <link rel="stylesheet" href="./css/site.css" /> + <link rel="stylesheet" href="./css/print.css" media="print" /> + + + <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script> + + + +<script type="text/javascript">$( document ).ready( function() { $( '.carousel' ).carousel( { interval: 3500 } ) } );</script> + + </head> + <body class="topBarDisabled"> + + + + + <div class="container"> + <div id="banner"> + <div class="pull-left"> + <div id="bannerLeft"> + <img src="images/falcon-logo.png" alt="Apache Falcon" width="200px" height="45px"/> + </div> + </div> + <div class="pull-right"> </div> + <div class="clear"><hr/></div> + </div> + + <div id="breadcrumbs"> + <ul class="breadcrumb"> + + + <li class=""> + <a href="index.html" title="Falcon"> + Falcon</a> + </li> + <li class="divider ">/</li> + <li class="">Falcon Data Import and Export</li> + + + + <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li> <li class="divider pull-right">|</li> + <li id="projectVersion" class="pull-right">Version: 0.11</li> + + </ul> + </div> + + + + <div id="bodyColumn" > + + <div class="section"> +<h2>Falcon Data Import and Export<a name="Falcon_Data_Import_and_Export"></a></h2></div> +<div class="section"> +<h3>Overview<a name="Overview"></a></h3> +<p>Falcon provides constructs to periodically bring raw data from external data sources (like databases, drop boxes etc) onto Hadoop and push derived data computed on Hadoop onto external data sources.</p> +<p>As of this release, Falcon only supports Relational Databases (e.g. Oracle, MySQL etc) via JDBC as external data source. The future releases will add support for other external data sources.</p></div> +<div class="section"> +<h3>Prerequisites<a name="Prerequisites"></a></h3> +<p>Following are the prerequisites to import external data from and export to databases.</p> +<p></p> +<ul> +<li><b>Sqoop 1.4.6+</b></li> +<li><b>Oozie 4.2.0+</b></li> +<li><b>Appropriate database connector</b></li></ul> +<p><b>Note:</b> Falcon uses Sqoop for import/export operation. Sqoop will require appropriate database driver to connect to the relational database. Please refer to the Sqoop documentation for any Sqoop related question. Please make sure the database driver jar is copied into oozie share lib for Sqoop.</p> +<div class="source"> +<pre> +For example, in order to import and export with MySQL, please make sure the latest MySQL connector +*mysql-connector-java-5.1.31.jar+* is copied into oozie's Sqoop share lib + +/user/oozie/share/lib/{lib-dir}/sqoop/mysql-connector-java-5.1.31.jar+ + +where {lib-dir} value varies in oozie deployments. + + +</pre></div></div> +<div class="section"> +<h3>Usage<a name="Usage"></a></h3></div> +<div class="section"> +<h4>Entity Definition and Setup<a name="Entity_Definition_and_Setup"></a></h4> +<p></p> +<ul> +<li><b>Datasource Entity</b></li></ul>Datasource entity abstracts connection and credential details to external data sources. The Datasource entity supports read and write interfaces with specific credentials. The default credential will be used if the read or write interface does not have its own credentials. In general, the Datasource entity will be defined by system administrator. Please refer to datasource XSD for more details. +<p>The following example defines a Datasource entity for a MySQL database. The import operation will use the read interface with url "jdbc:mysql://dbhost/test", user name "import_usr" and password text "sqoop". Where as, the export operation will use the write interface with url "jdbc:mysql://dbhost/test" with user name "export_usr" and password specified in a HDFS file at the location "/user/ambari-qa/password-store/password_write_user".</p> +<p>The default credential specified will be used if either the read or write interface does not provide its own credentials. The default credential specifies the password using password alias feature available via hadoop credential functionality. User will be able to create a password alias using "hadoop credential -create <alias> -provider <provider-path>" command, where <alias> is a string and <provider-path> is a HDFS jceks file. During runtime, the specified alias will be used to look up the password stored encrypted in the jceks hdfs file specified under the providerPath element.</p> +<p>The available read and write interfaces enable database administrators to segregate read and write workloads.</p> +<div class="source"> +<pre> + + File: mysql-database.xml + + <?xml version="1.0" encoding="UTF-8"?> + <datasource colo="west-coast" description="MySQL database on west coast" type="mysql" name="mysql-db" xmlns="uri:falcon:datasource:0.1"> + <tags>owner=foo...@ambari.apache.org, consumer=p...@ambari.apache.org</tags> + <interfaces> + <!-- ***** read interface ***** --> + <interface type="readonly" endpoint="jdbc:mysql://dbhost/test"> + <credential type="password-text"> + <userName>import_usr</userName> + <passwordText>sqoop</passwordFile> + </credential> + </interface> + + <!-- ***** write interface ***** --> + <interface type="write" endpoint="jdbc:mysql://dbhost/test"> + <credential type="password-file"> + <userName>export_usr</userName> + <passwordFile>/user/ambari-qa/password-store/password_write_user</passwordFile> + </credential> + </interface> + + <!-- *** default credential *** --> + <credential type="password-alias"> + <userName>sqoop2_user</userName> + <passwordAlias> + <alias>sqoop.password.alias</alias> + <providerPath>hdfs://namenode:8020/user/ambari-qa/sqoop_password.jceks</providerPath> + </passwordAlias> + </credential> + + </interfaces> + + <driver> + <clazz>com.mysql.jdbc.Driver</clazz> + <jar>/user/oozie/share/lib/lib_20150721010816/sqoop/mysql-connector-java-5.1.31</jar> + </driver> + </datasource> + +</pre></div> +<p></p> +<ul> +<li><b>Feed Entity</b></li></ul>Feed entity now enables users to define IMPORT and EXPORT policies in addition to RETENTION and REPLICATION. The IMPORT and EXPORT policies will refer to a already defined Datasource entity for connection and credential details and take a table name from the policy to operate on. Please refer to feed entity XSD for details. +<p>The following example defines a Feed entity with IMPORT and EXPORT policies. Both the IMPORT and EXPORT operations refer to a datasource entity "mysql-db". The IMPORT operation will use the read interface and credentials while the EXPORT operation will use the write interface and credentials. A feed instance is created every 1 hour since the frequency of the Feed is hour(1) and the Feed instances are deleted after 90 days because of the retention policy.</p> +<p>The feed's data location should have some combination of time partitions (like ${YEAR}, ${MONTH}, {$DAY}, ${HOUR}, ${MINUTE} etc) if import or export policy is associated.</p> +<div class="source"> +<pre> + + File: customer_email_feed.xml + + <?xml version="1.0" encoding="UTF-8"?> + <!-- + A feed representing Hourly customer email data retained for 90 days + --> + <feed description="Raw customer email feed" name="customer_feed" xmlns="uri:falcon:feed:0.1"> + <tags>externalSystem=USWestEmailServers,classification=secure</tags> + <groups>DataImportPipeline</groups> + <frequency>hours(1)</frequency> + <late-arrival cut-off="hours(4)"/> + <clusters> + <cluster name="primaryCluster" type="source"> + <validity start="2015-12-15T00:00Z" end="2016-03-31T00:00Z"/> + <retention limit="days(90)" action="delete"/> + <import> + <source name="mysql-db" tableName="simple"> + <extract type="full"> + <mergepolicy>snapshot</mergepolicy> + </extract> + <fields> + <includes> + <field>id</field> + <field>name</field> + </includes> + </fields> + </source> + <arguments> + <argument name="--split-by" value="id"/> + <argument name="--num-mappers" value="2"/> + </arguments> + </import> + <export> + <target name="mysql-db" tableName="simple_export"> + <load type="insert"/> + <fields> + <includes> + <field>id</field> + <field>name</field> + </includes> + </fields> + </target> + <arguments> + <argument name="--update-key" value="id"/> + </arguments> + </export> + </cluster> + </clusters> + + <locations> + <location type="data" path="/user/ambari-qa/falcon/demo/primary/importfeed/${YEAR}-${MONTH}-${DAY}-${HOUR}-${MINUTE}"/> + <location type="stats" path="/none"/> + <location type="meta" path="/none"/> + </locations> + + <ACL owner="ambari-qa" group="users" permission="0755"/> + <schema location="/none" provider="none"/> + + </feed> + +</pre></div> +<p></p> +<ul> +<li><b>Import policy</b></li></ul>The import policy uses the datasource entity specified in the "source" to connect to the database. The tableName specified should exist in the source datasource. +<p>Extraction type specifies whether to pull data from external datasource "full" everytime or "incrementally". The mergepolicy specifies how to organize (snapshot or append, i.e time series partiitons) the data on hadoop. The valid combinations are:</p> +<ul> +<li> +<ul> +<li>[full,snapshot] - data is extracted in full and dumped into the feed instance location.</li> +<li>[incremental, append] - data is extracted incrementally using the key specified in the <b>deltacolumn</b></li></ul></li></ul>and added as a partition to the feed instance location. +<ul> +<li> +<ul> +<li>[incremental, snapshot] - data is extracted incrementally and merged with already existing data on hadoop to</li></ul></li></ul>produce one latest feed instance.*This feature is not supported currently*. The use case for this feature is to efficiently import very large dimention tables that have updates and inserts onto hadoop and make it available as a snapshot with latest updates to consumers. +<p>The following example defines an incremental extraction with append organization:</p> +<div class="source"> +<pre> + <import> + <source name="mysql-db" tableName="simple"> + <extract type="incremental"> + <deltacolumn>modified_time</deltacolumn> + <mergepolicy>append</mergepolicy> + </extract> + <fields> + <includes> + <field>id</field> + <field>name</field> + </includes> + </fields> + </source> + <arguments> + <argument name="--split-by" value="id"/> + <argument name="--num-mappers" value="2"/> + </arguments> + </import> + +</pre></div> +<p>The fields option enables to control what fields get imported. By default, all fields get import. The "includes" option brings only those fields specified. The "excludes" option brings all the fields other than specified.</p> +<p>The arguments section enables to pass in any extra arguments needed for fine control on the underlying implementation -- in this case, Sqoop.</p> +<p></p> +<ul> +<li><b>Export policy</b></li></ul>The export, like import, uses the datasource for connecting to the database. Load type specifies whether to insert or only update data onto the external table. Fields option behaves the same way as in import policy. The tableName specified should exist in the external datasource.</div> +<div class="section"> +<h4>Operation<a name="Operation"></a></h4> +<p>Once the Datasource and Feed entity with import and export policies are defined, Users can submit and schedule the Import and Export operations via CLI and REST API as below:</p> +<div class="source"> +<pre> + + ## submit the mysql-db datasource defined in the file mysql_datasource.xml + falcon entity -submit -type datasource -file mysql_datasource.xml + + ## submit the customer_feed specified in the customer_email_feed.xml + falcon entity -submit -type feed -file customer_email_feed.xml + + ## schedule the customer_feed + falcon entity -schedule -type feed -name customer_feed + + +</pre></div> +<p>Falcon will create corresponding oozie bundles with coordinator and workflow for import and export operation.</p></div> + </div> + </div> + + <hr/> + + <footer> + <div class="container"> + <div class="row span12">Copyright © 2013-2018 + <a href="http://www.apache.org";>Apache Software Foundation</a>. + All Rights Reserved. + + </div> + + + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> +</html> http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/InstallationSteps.html ---------------------------------------------------------------------- diff --git a/content/0.11/InstallationSteps.html b/content/0.11/InstallationSteps.html new file mode 100644 index 0000000..72fa2a9 --- /dev/null +++ b/content/0.11/InstallationSteps.html @@ -0,0 +1,153 @@ +<!DOCTYPE html> +<!-- + | Generated by Apache Maven Doxia at 2018-03-12 + | Rendered using Apache Maven Fluido Skin 1.3.0 +--> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> + <head> + <meta charset="UTF-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="Date-Revision-yyyymmdd" content="20180312" /> + <meta http-equiv="Content-Language" content="en" /> + <title>Falcon - Building & Installing Falcon</title> + <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" /> + <link rel="stylesheet" href="./css/site.css" /> + <link rel="stylesheet" href="./css/print.css" media="print" /> + + + <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script> + + + +<script type="text/javascript">$( document ).ready( function() { $( '.carousel' ).carousel( { interval: 3500 } ) } );</script> + + </head> + <body class="topBarDisabled"> + + + + + <div class="container"> + <div id="banner"> + <div class="pull-left"> + <div id="bannerLeft"> + <img src="images/falcon-logo.png" alt="Apache Falcon" width="200px" height="45px"/> + </div> + </div> + <div class="pull-right"> </div> + <div class="clear"><hr/></div> + </div> + + <div id="breadcrumbs"> + <ul class="breadcrumb"> + + + <li class=""> + <a href="index.html" title="Falcon"> + Falcon</a> + </li> + <li class="divider ">/</li> + <li class="">Building & Installing Falcon</li> + + + + <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li> <li class="divider pull-right">|</li> + <li id="projectVersion" class="pull-right">Version: 0.11</li> + + </ul> + </div> + + + + <div id="bodyColumn" > + + <div class="section"> +<h2>Building & Installing Falcon<a name="Building__Installing_Falcon"></a></h2></div> +<div class="section"> +<h3>Building Falcon<a name="Building_Falcon"></a></h3></div> +<div class="section"> +<h4>Prerequisites<a name="Prerequisites"></a></h4> +<p></p> +<ul> +<li>JDK 1.7/1.8</li> +<li>Maven 3.2.x</li></ul></div> +<div class="section"> +<h4>Step 1 - Clone the Falcon repository<a name="Step_1_-_Clone_the_Falcon_repository"></a></h4> +<div class="source"> +<pre> +$git clone https://git-wip-us.apache.org/repos/asf/falcon.git falcon + +</pre></div></div> +<div class="section"> +<h4>Step 2 - Build Falcon<a name="Step_2_-_Build_Falcon"></a></h4> +<div class="source"> +<pre> +$ cd falcon +$ export MAVEN_OPTS="-Xmx1024m -XX:MaxPermSize=256m -noverify" +$ mvn clean install + + +</pre></div> +<p>It builds and installs the package into the local repository, for use as a dependency in other projects locally.</p> +<p>[optionally -Dhadoop.version=<<hadoop.version>> can be appended to build for a specific version of hadoop]</p> +<p><b>Note 1:</b> Falcon drops support for Hadoop-1 and only supports Hadoop-2 from Falcon 0.6 onwards Falcon build with JDK 1.7 using -noverify option</p> +<p><b>Note 2:</b> To compile Falcon with addon extensions, append additional profiles to build command using syntax -P<<profile1,profile2>> For Hive Mirroring extension, use profile"hivedr". Hive >= 1.2.0 and Oozie >= 4.2.0 is required For HDFS Snapshot mirroring extension, use profile "hdfs-snapshot-mirroring". Hadoop >= 2.7.0 is required For ADF integration, use profile "adf"</p></div> +<div class="section"> +<h4>Step 3 - Package and Deploy Falcon<a name="Step_3_-_Package_and_Deploy_Falcon"></a></h4> +<p>Once the build successfully completes, artifacts can be packaged for deployment using the assembly plugin. The Assembly Plugin for Maven is primarily intended to allow users to aggregate the project output along with its dependencies, modules, site documentation, and other files into a single distributable archive. There are two basic ways in which you can deploy Falcon - Embedded mode(also known as Stand Alone Mode) and Distributed mode. Your next steps will vary based on the mode in which you want to deploy Falcon.</p> +<p><b>NOTE</b> : Oozie is being extended by Falcon (particularly on el-extensions) and hence the need for Falcon to build & re-package Oozie, so that users of Falcon can work with the right Oozie setup. Though Oozie is packaged by Falcon, it needs to be deployed separately by the administrator and is not auto deployed along with Falcon.</p></div> +<div class="section"> +<h5>Embedded/Stand Alone Mode<a name="EmbeddedStand_Alone_Mode"></a></h5> +<p>Embedded mode is useful when the Hadoop jobs and relevant data processing involve only one Hadoop cluster. In this mode there is a single Falcon server that contacts the scheduler to schedule jobs on Hadoop. All the process/feed requests like submit, schedule, suspend, kill etc. are sent to this server. For running Falcon in this mode one should use the Falcon which has been built using standalone option. You can find the instructions for Embedded mode setup <a href="./Embedded-mode.html">here</a>.</p></div> +<div class="section"> +<h5>Distributed Mode<a name="Distributed_Mode"></a></h5> +<p>Distributed mode is for multiple (colos) instances of Hadoop clusters, and multiple workflow schedulers to handle them. In this mode Falcon has 2 components: Prism and Server(s). Both Prism and Server(s) have their own their own config locations(startup and runtime properties). In this mode Prism acts as a contact point for Falcon servers. While all commands are available through Prism, only read and instance api's are available through Server. You can find the instructions for Distributed Mode setup <a href="./Distributed-mode.html">here</a>.</p></div> +<div class="section"> +<h4>Preparing Oozie and Falcon packages for deployment<a name="Preparing_Oozie_and_Falcon_packages_for_deployment"></a></h4> +<div class="source"> +<pre> +$cd <<project home>> +$src/bin/package.sh <<hadoop-version>> <<oozie-version>> + +>> ex. src/bin/package.sh 1.1.2 4.0.1 or src/bin/package.sh 0.20.2-cdh3u5 4.0.1 +>> ex. src/bin/package.sh 2.5.0 4.0.0 +>> Falcon package is available in <<falcon home>>/target/apache-falcon-<<version>>-bin.tar.gz +>> Oozie package is available in <<falcon home>>/target/oozie-4.0.1-distro.tar.gz +>> __IMPORTANT: You need to download the je-5.0.73 version from http://download.oracle.com/otn/berkeley-db/je-5.0.73.zip and extract je-5.0.73 under the Falcon webapp directory or provision an HBase cluster for use as Falcon graphdb backend DB. + Depending on the Graphdb backend choice, update the startup.properties appropriately.__ + +</pre></div> +<p><b>NOTE:</b> If you have a separate Apache Oozie installation, you will need to follow some additional steps:</p> +<ol style="list-style-type: decimal"> +<li>Once you have setup the Falcon Server, copy libraries under {falcon-server-dir}/oozie/libext/ to {oozie-install-dir}/libext.</li> +<li>Modify Oozie's configuration file. Copy all Falcon related properties from {falcon-server-dir}/oozie/conf/oozie-site.xml to {oozie-install-dir}/conf/oozie-site.xml</li> +<li>Restart oozie: +<ol style="list-style-type: decimal"> +<li>cd {oozie-install-dir}</li> +<li>sudo -u oozie ./bin/oozie-stop.sh</li> +<li>sudo -u oozie ./bin/oozie-setup.sh prepare-war</li> +<li>sudo -u oozie ./bin/oozie-start.sh</li></ol></li></ol></div> + </div> + </div> + + <hr/> + + <footer> + <div class="container"> + <div class="row span12">Copyright © 2013-2018 + <a href="http://www.apache.org";>Apache Software Foundation</a>. + All Rights Reserved. + + </div> + + + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> +</html> http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/MetricCollection.html ---------------------------------------------------------------------- diff --git a/content/0.11/MetricCollection.html b/content/0.11/MetricCollection.html new file mode 100644 index 0000000..322eb91 --- /dev/null +++ b/content/0.11/MetricCollection.html @@ -0,0 +1,121 @@ +<!DOCTYPE html> +<!-- + | Generated by Apache Maven Doxia at 2018-03-12 + | Rendered using Apache Maven Fluido Skin 1.3.0 +--> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> + <head> + <meta charset="UTF-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="Date-Revision-yyyymmdd" content="20180312" /> + <meta http-equiv="Content-Language" content="en" /> + <title>Falcon - Metric Collection</title> + <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" /> + <link rel="stylesheet" href="./css/site.css" /> + <link rel="stylesheet" href="./css/print.css" media="print" /> + + + <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script> + + + +<script type="text/javascript">$( document ).ready( function() { $( '.carousel' ).carousel( { interval: 3500 } ) } );</script> + + </head> + <body class="topBarDisabled"> + + + + + <div class="container"> + <div id="banner"> + <div class="pull-left"> + <div id="bannerLeft"> + <img src="images/falcon-logo.png" alt="Apache Falcon" width="200px" height="45px"/> + </div> + </div> + <div class="pull-right"> </div> + <div class="clear"><hr/></div> + </div> + + <div id="breadcrumbs"> + <ul class="breadcrumb"> + + + <li class=""> + <a href="index.html" title="Falcon"> + Falcon</a> + </li> + <li class="divider ">/</li> + <li class="">Metric Collection</li> + + + + <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li> <li class="divider pull-right">|</li> + <li id="projectVersion" class="pull-right">Version: 0.11</li> + + </ul> + </div> + + + + <div id="bodyColumn" > + + <div class="section"> +<h3>Metric Collection<a name="Metric_Collection"></a></h3> +<p>Metric Collection currently allows to collect the following metrics at process level:</p> +<p></p> +<ol style="list-style-type: decimal"> +<li>Processing time the process spent in the running state in seconds (workflow_end_time - workflow_start_time)</li> +<li>Wait time that the process spent in the waiting/ready state. (workflow_start_time - workflow_nominal_time)</li> +<li>Number of instances that are failed for a process.</li></ol> +<p>To send data to <b>Graphite</b></p> +<p>Falcon need to intialize metricNotificationService in startup.properties:</p> +<div class="source"> +<pre> +*.application.services= org.apache.falcon.metrics.MetricNotificationService, + +</pre></div> +<p>Add following properties for graphiteNotificationPlugin :</p> +<p><b>Graphite properties</b></p> +<div class="source"> +<pre> + * *.falcon.graphite.hostname=localhost + * *.falcon.graphite.port=2003 + * *.falcon.graphite.frequency=1 + * *.falcon.graphite.prefix=falcon + +</pre></div> +<p>The falcon.graphite.frequency is in seconds and all the time that is being sent to graphite is in seconds.</p> +<p>To send data to <b>Falcon DB</b></p> +<p>Falcon needs to <b>ProcessInstanceInfo</b> table in the database have a look at <a href="./FalconDatabase.html">FalconDatabase</a> to know how to create it.</p> +<p>Add the following properties in the startup.properties:</p> +<div class="source"> +<pre> +#*.monitoring.plugins=org.apache.falcon.plugin.ProcessExecutionStatsPlugin + +</pre></div></div> + </div> + </div> + + <hr/> + + <footer> + <div class="container"> + <div class="row span12">Copyright © 2013-2018 + <a href="http://www.apache.org";>Apache Software Foundation</a>. + All Rights Reserved. + + </div> + + + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> +</html> http://git-wip-us.apache.org/repos/asf/falcon/blob/91c68bea/content/0.11/MigrationInstructions.html ---------------------------------------------------------------------- diff --git a/content/0.11/MigrationInstructions.html b/content/0.11/MigrationInstructions.html new file mode 100644 index 0000000..83a7695 --- /dev/null +++ b/content/0.11/MigrationInstructions.html @@ -0,0 +1,113 @@ +<!DOCTYPE html> +<!-- + | Generated by Apache Maven Doxia at 2018-03-12 + | Rendered using Apache Maven Fluido Skin 1.3.0 +--> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> + <head> + <meta charset="UTF-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="Date-Revision-yyyymmdd" content="20180312" /> + <meta http-equiv="Content-Language" content="en" /> + <title>Falcon - Migration Instructions</title> + <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" /> + <link rel="stylesheet" href="./css/site.css" /> + <link rel="stylesheet" href="./css/print.css" media="print" /> + + + <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script> + + + +<script type="text/javascript">$( document ).ready( function() { $( '.carousel' ).carousel( { interval: 3500 } ) } );</script> + + </head> + <body class="topBarDisabled"> + + + + + <div class="container"> + <div id="banner"> + <div class="pull-left"> + <div id="bannerLeft"> + <img src="images/falcon-logo.png" alt="Apache Falcon" width="200px" height="45px"/> + </div> + </div> + <div class="pull-right"> </div> + <div class="clear"><hr/></div> + </div> + + <div id="breadcrumbs"> + <ul class="breadcrumb"> + + + <li class=""> + <a href="index.html" title="Falcon"> + Falcon</a> + </li> + <li class="divider ">/</li> + <li class="">Migration Instructions</li> + + + + <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li> <li class="divider pull-right">|</li> + <li id="projectVersion" class="pull-right">Version: 0.11</li> + + </ul> + </div> + + + + <div id="bodyColumn" > + + <div class="section"> +<h2>Migration Instructions<a name="Migration_Instructions"></a></h2></div> +<div class="section"> +<h3>Migrate from 0.9 to 0.10<a name="Migrate_from_0.9_to_0.10"></a></h3> +<p>FALCON-1333 (Instance Search feature) requires Falcon to use titan-berkeleyje version 0.5.4 to support indexing. Up until version 0.9 - Falcon used titan-berkeleyje-jre6 version 0.4.2. GraphDB created by version 0.4.2 cannot be read by version 0.5.4. The solution is to migrate the GraphDB to be compatible with Falcon 0.10 release. Please make sure that no falcon server is running while performing the migration.</p></div> +<div class="section"> +<h4>1. Install Falcon 0.10<a name="a1._Install_Falcon_0.10"></a></h4> +<p>Install Falcon 0.10 by following the <a href="./InstallationSteps.html">Installation Steps</a>. Do not start the falcon server yet. The tool to migrate graphDB is packaged with 0.10 Falcon server in falcon-common-0.10.jar.</p></div> +<div class="section"> +<h4>2. Export GraphDB to JSON file using Falcon 0.9<a name="a2._Export_GraphDB_to_JSON_file_using_Falcon_0.9"></a></h4> +<p>Please run the following command to generate the JSON file.</p> +<div class="source"> +<pre> + $FALCON_HOME/bin/graphdbutil.sh export <<java_home> <<hadoop_home>> <<falcon_0.9_home>> <<path_to_falcon-common-0.10.jar>> /jsonFile/dir/ + +</pre></div> +<p>This command will create /jsonFile/dir/instanceMetadata.json</p></div> +<div class="section"> +<h4>3. Import GraphDB from JSON file using Falcon 0.10<a name="a3._Import_GraphDB_from_JSON_file_using_Falcon_0.10"></a></h4> +<p>Please run the following command to import graphDB the JSON file. The location of graphDB will be based on property "*.falcon.graph.storage.directory" set in startup.properties file.</p> +<div class="source"> +<pre> + $FALCON_HOME/bin/graphdbutil.sh export <<java_home> <<hadoop_home>> <<falcon_0.10_home>> <<path_to_falcon-common-0.10.jar>> /jsonFile/dir/ + +</pre></div> +<p>This command will import from /jsonFile/dir/instanceMetadata.json, now start the Falcon 0.10 server.</p></div> + </div> + </div> + + <hr/> + + <footer> + <div class="container"> + <div class="row span12">Copyright © 2013-2018 + <a href="http://www.apache.org";>Apache Software Foundation</a>. + All Rights Reserved. + + </div> + + + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> +</html>
