How do I delete all data from solr
by command? We are using solr
with lily
and hbase
.
How can I delete data from both hbase and solr?
http://lucene.apache.org/solr/4_10_0/tutorial.html#Deleting+Data
Use the "match all docs" query in a delete by query command: :
You must also commit after running the delete so, to empty the index, run the following two commands:
curl http://localhost:8983/solr/update --data '<delete><query>*:*</query></delete>' -H 'Content-type:text/xml; charset=utf-8'
curl http://localhost:8983/solr/update --data '<commit/>' -H 'Content-type:text/xml; charset=utf-8'
When clearing out a Solr index, you should also do a commit and optimize after running the delete-all query. Full steps required (curl is all you need): http://www.alphadevx.com/a/365-Clearing-a-Solr-search-index
If you want to delete all of the data in Solr via SolrJ do something like this.
public static void deleteAllSolrData() {
HttpSolrServer solr = new HttpSolrServer("http://localhost:8080/solr/core/");
try {
solr.deleteByQuery("*:*");
} catch (SolrServerException e) {
throw new RuntimeException("Failed to delete data in Solr. "
+ e.getMessage(), e);
} catch (IOException e) {
throw new RuntimeException("Failed to delete data in Solr. "
+ e.getMessage(), e);
}
}
If you want to delete all of the data in HBase do something like this.
public static void deleteHBaseTable(String tableName, Configuration conf) {
HBaseAdmin admin = null;
try {
admin = new HBaseAdmin(conf);
admin.disableTable(tableName);
admin.deleteTable(tableName);
} catch (MasterNotRunningException e) {
throw new RuntimeException("Unable to delete the table " + tableName
+ ". The actual exception is: " + e.getMessage(), e);
} catch (ZooKeeperConnectionException e) {
throw new RuntimeException("Unable to delete the table " + tableName
+ ". The actual exception is: " + e.getMessage(), e);
} catch (IOException e) {
throw new RuntimeException("Unable to delete the table " + tableName
+ ". The actual exception is: " + e.getMessage(), e);
} finally {
close(admin);
}
}
You can use the following commands to delete.
Use the "match all docs" query in a delete by query command:
'<delete><query>*:*</query></delete>
You must also commit after running the delete so, to empty the index, run the following two commands:
curl http://localhost:8983/solr/update --data '<delete><query>*:*</query></delete>' -H 'Content-type:text/xml; charset=utf-8'
curl http://localhost:8983/solr/update --data '<commit/>' -H 'Content-type:text/xml; charset=utf-8'
Another strategy would be to add two bookmarks in your browser:
http://localhost:8983/solr/update?stream.body=<delete><query>*:*</query></delete>
http://localhost:8983/solr/update?stream.body=<commit/>
Source docs from SOLR:
https://wiki.apache.org/solr/FAQ#How_can_I_delete_all_documents_from_my_index.3F
Solr I am not sure but you can delete all the data from hbase using truncate command like below:
truncate 'table_name'
It will delete all row-keys from hbase table.
If you're using Cloudera 5.x, Here in this documentation is mentioned that Lily maintains the Real time updations and deletions also.
Configuring the Lily HBase NRT Indexer Service for Use with Cloudera Search
As HBase applies inserts, updates, and deletes to HBase table cells, the indexer keeps Solr consistent with the HBase table contents, using standard HBase replication.
Not sure iftruncate 'hTable'
is also supported in the same.
Else you create a Trigger or Service to clear up your data from both Solr and HBase on a particular Event or anything.
To delete all documents of a Solr collection, you can use this request:
curl -X POST -H 'Content-Type: application/json' --data-binary '{"delete":{"query":"*:*" }}' http://localhost:8983/solr/my_collection/update
It uses JSON body.
fire this in the browser
http://localhost:8983/solr/update?stream.body=<delete><query>*:*</query></delete>&commit=true
this commmand will delete all the documents in index in solr
I came here looking to delete all documents from solr instance through .Net framework using SolrNet. Here is how I was able to do it:
Startup.Init<MyEntity>("http://localhost:8081/solr");
ISolrOperations<MyEntity> solr =
ServiceLocator.Current.GetInstance<ISolrOperations<MyEntity>>();
SolrQuery sq = new SolrQuery("*:*");
solr.Delete(sq);
solr.Commit();
This has cleared all the documents. (I am not sure if this could be recovered, I am in learning and testing phase of Solr, so please consider backup before using this code)
The curl examples above all failed for me when I ran them from a cygwin terminal. There were errors like this when i ran the script example.
curl http://192.168.2.20:7773/solr/CORE1/update --data '<delete><query>*:*</query></delete>' -H 'Content-type:text/xml; charset=utf-8'
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader"><int name="status">0</int><int name="QTime">1</int></lst>
</response>
<!--
It looks like it deleted stuff, but it did not go away
maybe because the committing call failed like so
-->
curl http://192.168.1.2:7773/solr/CORE1/update --data-binary '' -H 'Content-type:text/xml; charset=utf-8'
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader"><int name="status">400</int><int name="QTime">2</int></lst><lst name="error"><str name="msg">Unexpected EOF in prolog
at [row,col {unknown-source}]: [1,0]</str><int name="code">400</int></lst>
</response>
I needed to use the delete in a loop on core names to wipe them all out in a project.
This query below worked for me in the Cygwin terminal script.
curl http://192.168.1.2:7773/hpi/CORE1/update?stream.body=<delete><query>*:*</query></delete>&commit=true
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader"><int name="status">0</int><int name="QTime">1</int></lst>
</response>
This one line made the data go away and the change persisted.
From the command line use:
bin/post -c core_name -type text/xml -out yes -d $'<delete><query>*:*</query></delete>'
I've used this query to delete all my records.
http://host/solr/core-name/update?stream.body=%3Cdelete%3E%3Cquery%3E*:*%3C/query%3E%3C/delete%3E&commit=true
Post json data (e.g. with curl)
curl -X POST -H 'Content-Type: application/json' \
'http://<host>:<port>/solr/<core>/update?commit=true' \
-d '{ "delete": {"query":"*:*"} }'
I tried the below steps. It works well.
Just click the link Delete all SOLR data which will hit and delete all your SOLR indexed datas then you will get the following details on the screen as output.
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">494</int>
</lst>
</response>
if you are not getting the above output then please make sure the following.
host
(localhost) and port
(8080) on the above link. please alter the host and port if it is different in your end. collection
/ collection1
. I used collection1
in the above link. please change it too if your core name is different.I made a JavaScript bookmark which adds the delete link in Solr Admin UI
javascript: (function() {_x000D_
var str, $a, new_href, href, upd_str = 'update?stream.body=<delete><query>*:*</query></delete>&commit=true';_x000D_
$a = $('#result a#url');_x000D_
href = $a.attr('href');_x000D_
str = href.match('.+solr\/.+\/(.*)')[1];_x000D_
new_href = href.replace(str, upd_str);_x000D_
$('#result').prepend('<a id="url_upd" class="address-bar" href="' + new_href + '"><strong>DELETE ALL</strong> ' + new_href + '</a>');_x000D_
})();
_x000D_
I've used this request to delete all my records but sometimes it's necessary to commit this.
For that, add &commit=true
to your request :
http://host:port/solr/core/update?stream.body=<delete><query>*:*</query></delete>&commit=true
If you need to clean out all data, it might be faster to recreate collection, e.g.
solrctl --zk localhost:2181/solr collection --delete <collectionName>
solrctl --zk localhost:2181/solr collection --create <collectionName> -s 1
Source: Stackoverflow.com