Re: [Neo4j] Re: Clearing nodes

[Michael Hunger]

yes I was referring to neo4j-shell



On Sun, Mar 6, 2016 at 8:04 PM, Jesse Hemingway  wrote:

> Maybe you're referring to `neo4j-shell`, as the suggested commands have no
> effect for me with `neo4j console` (Neo4j 2.3.2 Community, OSX 10.11.3).
> The docs here  also state:
>
> console
>
> Start the server as an application, running as a foreground process. Stop
> the server using CTRL-C.
>
>
> And with Ctrl-C, shutdown *appears* to be graceful:
>
> $ neo4j console
> ...
>
> 2016-03-06 13:52:33.555-0600 INFO  Remote interface ready and available at
> http://localhost:7474/
>
> quit
>
> ^D
>
> ^C2016-03-06 13:52:50.748-0600 INFO  Neo4j Server shutdown initiated by
> request
>
> ...
>
> 2016-03-06 13:52:50.852-0600 INFO  Successfully stopped database
>
> 2016-03-06 13:52:50.852-0600 INFO  Successfully shutdown database
>
>
>
> On Sunday, March 6, 2016 at 1:25:38 AM UTC-6, Michael Hunger wrote:
>>
>> Clean shutdown
>>
>> Ie "quit" or ctrl-d
>>
>>
>>
>> Von meinem iPhone gesendet
>>
>> Am 06.03.2016 um 00:47 schrieb Jesse Hemingway :
>>
>> Ok, that certainly works. That's a bit boggling -- I have quite a few
>> indexes and constraints, if that could have any effect. I also use the
>> TimeTree module by GraphAware (several at once). I'll play around with a
>> few combinations when I have time to focus on that oddity and hopefully
>> report back with more useful information. Also, when do the disused records
>> get recovered – on shutdown? I'm just running with `neo4j console`, killing
>> it with Ctrl+C each time.
>>
>> On Sat, Mar 5, 2016 at 3:10 PM, Michael Hunger <
>> michael...@neotechnology.com> wrote:
>>
>>> Interesting, it works for me:
>>>
>>> on empty db, create 100k nodes 100k rels delete everything, check sizes
>>> restart create 100k nodes 100k rels delete everything, check sizes
>>> same size on disk
>>>
>>> wuqour:neo4j-enterprise-2.3.2 mh$ rm -rf test*.db
>>>
>>> wuqour:neo4j-enterprise-2.3.2 mh$ bin/neo4j-shell -path test.db
>>>
>>> NOTE: Local Neo4j graph database service at 'test.db'
>>>
>>> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
>>>
>>>
>>>
>>> neo4j-sh (?)$ foreach(x in range(1,10) | create (:Person
>>> {name:"person "+x, age : x % 100}));
>>>
>>> +---+
>>>
>>> | No data returned. |
>>>
>>> +---+
>>>
>>> Nodes created: 10
>>>
>>> Properties set: 20
>>>
>>> Labels added: 10
>>>
>>> 5996 ms
>>>
>>> neo4j-sh (?)$ unwind range(1,10) as x match (p) where id(p) = x
>>> match (p2) where id(p2) = toInt(rand()*10) create (p)-[:KNOWS]->(p2);
>>>
>>> +---+
>>>
>>> | No data returned. |
>>>
>>> +---+
>>>
>>> Relationships created: 9
>>>
>>> 3185 ms
>>>
>>> neo4j-sh (?)$ match (n) detach delete n;
>>>
>>> +---+
>>>
>>> | No data returned. |
>>>
>>> +---+
>>>
>>> Nodes deleted: 10
>>>
>>> Relationships deleted: 9
>>>
>>> 1654 ms
>>>
>>> neo4j-sh (?)$ quit
>>>
>>> wuqour:neo4j-enterprise-2.3.2 mh$ du -sh test.db/neostore*.db
>>>
>>> 8,0K test.db/neostore.labeltokenstore.db
>>>
>>> 1,4M test.db/neostore.nodestore.db
>>>
>>> 3,9M test.db/neostore.propertystore.db
>>>
>>> 8,0K test.db/neostore.relationshipgroupstore.db
>>>
>>> 3,2M test.db/neostore.relationshipstore.db
>>>
>>> 8,0K test.db/neostore.relationshiptypestore.db
>>>
>>> 8,0K test.db/neostore.schemastore.db
>>>
>>> wuqour:neo4j-enterprise-2.3.2 mh$ bin/neo4j-shell -path test.db
>>>
>>> NOTE: Local Neo4j graph database service at 'test.db'
>>>
>>> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
>>>
>>>
>>>
>>> neo4j-sh (?)$ foreach(x in range(1,10) | create (:Person
>>> {name:"person "+x, age : x % 100}));
>>>
>>> +---+
>>>
>>> | No data returned. |
>>>
>>> +---+
>>>
>>> Nodes created: 10
>>>
>>> Properties set: 20
>>>
>>> Labels added: 10
>>>
>>> 5911 ms
>>>
>>> neo4j-sh (?)$ unwind range(1,10) as x match (p) where id(p) = x
>>> match (p2) where id(p2) = toInt(rand()*10) create (p)-[:KNOWS]->(p2);
>>>
>>> +---+
>>>
>>> | No data returned. |
>>>
>>> +---+
>>>
>>> Relationships created: 9
>>>
>>> 1897 ms
>>>
>>> neo4j-sh (?)$ match (n) detach delete n;
>>>
>>> +---+
>>>
>>> | No data returned. |
>>>
>>> +---+
>>>
>>> Nodes deleted: 10
>>>
>>> Relationships deleted: 9
>>>
>>> 1415 ms
>>>
>>> neo4j-sh (?)$ wuqour:neo4j-enterprise-2.3.2 mh$ du -sh
>>> test.db/neostore*.db
>>>
>>> 8,0K test.db/neostore.labeltokenstore.db
>>>
>>> 1,4M test.db/neostore.nodestore.db
>>>
>>> 3,9M test.db/neostore.propertystore.db
>>>
>>> 8,0K test.db/neostore.relationshipgroupstore.db
>>>
>>> 3,2M test.db/neostore.relationshipstore.db
>>>
>>> 8,0K test.db/neostore.relationshiptypestore.db
>>>
>>> 8,0K test.db/neostore.schemastore.db
>>>
>>> On Sat, Mar 5, 2016 at 6:43 PM, Jesse Hemingway 

Re: [Neo4j] Re: Clearing nodes

[Jesse Hemingway]

Maybe you're referring to `neo4j-shell`, as the suggested commands have no 
effect for me with `neo4j console` (Neo4j 2.3.2 Community, OSX 10.11.3). 
The docs here  also state:

console 

Start the server as an application, running as a foreground process. Stop 
the server using CTRL-C.


And with Ctrl-C, shutdown *appears* to be graceful:

$ neo4j console
...

2016-03-06 13:52:33.555-0600 INFO  Remote interface ready and available at 
http://localhost:7474/

quit

^D

^C2016-03-06 13:52:50.748-0600 INFO  Neo4j Server shutdown initiated by 
request

...

2016-03-06 13:52:50.852-0600 INFO  Successfully stopped database

2016-03-06 13:52:50.852-0600 INFO  Successfully shutdown database



On Sunday, March 6, 2016 at 1:25:38 AM UTC-6, Michael Hunger wrote:
>
> Clean shutdown
>
> Ie "quit" or ctrl-d
>
>
>
> Von meinem iPhone gesendet
>
> Am 06.03.2016 um 00:47 schrieb Jesse Hemingway  >:
>
> Ok, that certainly works. That's a bit boggling -- I have quite a few 
> indexes and constraints, if that could have any effect. I also use the 
> TimeTree module by GraphAware (several at once). I'll play around with a 
> few combinations when I have time to focus on that oddity and hopefully 
> report back with more useful information. Also, when do the disused records 
> get recovered – on shutdown? I'm just running with `neo4j console`, killing 
> it with Ctrl+C each time.
>
> On Sat, Mar 5, 2016 at 3:10 PM, Michael Hunger <
> michael...@neotechnology.com > wrote:
>
>> Interesting, it works for me:
>>
>> on empty db, create 100k nodes 100k rels delete everything, check sizes
>> restart create 100k nodes 100k rels delete everything, check sizes
>> same size on disk 
>>
>> wuqour:neo4j-enterprise-2.3.2 mh$ rm -rf test*.db
>>
>> wuqour:neo4j-enterprise-2.3.2 mh$ bin/neo4j-shell -path test.db
>>
>> NOTE: Local Neo4j graph database service at 'test.db'
>>
>> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
>>
>>
>>
>> neo4j-sh (?)$ foreach(x in range(1,10) | create (:Person 
>> {name:"person "+x, age : x % 100}));
>>
>> +---+
>>
>> | No data returned. |
>>
>> +---+
>>
>> Nodes created: 10
>>
>> Properties set: 20
>>
>> Labels added: 10
>>
>> 5996 ms
>>
>> neo4j-sh (?)$ unwind range(1,10) as x match (p) where id(p) = x match 
>> (p2) where id(p2) = toInt(rand()*10) create (p)-[:KNOWS]->(p2);
>>
>> +---+
>>
>> | No data returned. |
>>
>> +---+
>>
>> Relationships created: 9
>>
>> 3185 ms
>>
>> neo4j-sh (?)$ match (n) detach delete n;
>>
>> +---+
>>
>> | No data returned. |
>>
>> +---+
>>
>> Nodes deleted: 10
>>
>> Relationships deleted: 9
>>
>> 1654 ms
>>
>> neo4j-sh (?)$ quit
>>
>> wuqour:neo4j-enterprise-2.3.2 mh$ du -sh test.db/neostore*.db
>>
>> 8,0K test.db/neostore.labeltokenstore.db
>>
>> 1,4M test.db/neostore.nodestore.db
>>
>> 3,9M test.db/neostore.propertystore.db
>>
>> 8,0K test.db/neostore.relationshipgroupstore.db
>>
>> 3,2M test.db/neostore.relationshipstore.db
>>
>> 8,0K test.db/neostore.relationshiptypestore.db
>>
>> 8,0K test.db/neostore.schemastore.db
>>
>> wuqour:neo4j-enterprise-2.3.2 mh$ bin/neo4j-shell -path test.db
>>
>> NOTE: Local Neo4j graph database service at 'test.db'
>>
>> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
>>
>>
>>
>> neo4j-sh (?)$ foreach(x in range(1,10) | create (:Person 
>> {name:"person "+x, age : x % 100}));
>>
>> +---+
>>
>> | No data returned. |
>>
>> +---+
>>
>> Nodes created: 10
>>
>> Properties set: 20
>>
>> Labels added: 10
>>
>> 5911 ms
>>
>> neo4j-sh (?)$ unwind range(1,10) as x match (p) where id(p) = x match 
>> (p2) where id(p2) = toInt(rand()*10) create (p)-[:KNOWS]->(p2);
>>
>> +---+
>>
>> | No data returned. |
>>
>> +---+
>>
>> Relationships created: 9
>>
>> 1897 ms
>>
>> neo4j-sh (?)$ match (n) detach delete n;
>>
>> +---+
>>
>> | No data returned. |
>>
>> +---+
>>
>> Nodes deleted: 10
>>
>> Relationships deleted: 9
>>
>> 1415 ms
>>
>> neo4j-sh (?)$ wuqour:neo4j-enterprise-2.3.2 mh$ du -sh 
>> test.db/neostore*.db
>>
>> 8,0K test.db/neostore.labeltokenstore.db
>>
>> 1,4M test.db/neostore.nodestore.db
>>
>> 3,9M test.db/neostore.propertystore.db
>>
>> 8,0K test.db/neostore.relationshipgroupstore.db
>>
>> 3,2M test.db/neostore.relationshipstore.db
>>
>> 8,0K test.db/neostore.relationshiptypestore.db
>>
>> 8,0K test.db/neostore.schemastore.db
>>
>> On Sat, Mar 5, 2016 at 6:43 PM, Jesse Hemingway > > wrote:
>>
>>> This is not holding true for my setup, as I've seen my modest 10MB 
>>> database grow to 250MB over the course of repeatedly testing my seeding 
>>> logic, and shutting down the server many times as I made configuration 
>>> changes for new modules, etc. Also, this SO article 
>>> 

Re: [Neo4j] Re: Clearing nodes

[Michael Hunger]

Clean shutdown

Ie "quit" or ctrl-d



Von meinem iPhone gesendet

> Am 06.03.2016 um 00:47 schrieb Jesse Hemingway :
> 
> Ok, that certainly works. That's a bit boggling -- I have quite a few indexes 
> and constraints, if that could have any effect. I also use the TimeTree 
> module by GraphAware (several at once). I'll play around with a few 
> combinations when I have time to focus on that oddity and hopefully report 
> back with more useful information. Also, when do the disused records get 
> recovered – on shutdown? I'm just running with `neo4j console`, killing it 
> with Ctrl+C each time.
> 
>> On Sat, Mar 5, 2016 at 3:10 PM, Michael Hunger 
>>  wrote:
>> Interesting, it works for me:
>> 
>> on empty db, create 100k nodes 100k rels delete everything, check sizes
>> restart create 100k nodes 100k rels delete everything, check sizes
>> same size on disk 
>> wuqour:neo4j-enterprise-2.3.2 mh$ rm -rf test*.db
>> 
>> wuqour:neo4j-enterprise-2.3.2 mh$ bin/neo4j-shell -path test.db
>> 
>> NOTE: Local Neo4j graph database service at 'test.db'
>> 
>> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
>> 
>> 
>> 
>> 
>> 
>> neo4j-sh (?)$ foreach(x in range(1,10) | create (:Person {name:"person 
>> "+x, age : x % 100}));
>> 
>> +---+
>> 
>> | No data returned. |
>> 
>> +---+
>> 
>> Nodes created: 10
>> 
>> Properties set: 20
>> 
>> Labels added: 10
>> 
>> 5996 ms
>> 
>> neo4j-sh (?)$ unwind range(1,10) as x match (p) where id(p) = x match 
>> (p2) where id(p2) = toInt(rand()*10) create (p)-[:KNOWS]->(p2);
>> 
>> +---+
>> 
>> | No data returned. |
>> 
>> +---+
>> 
>> Relationships created: 9
>> 
>> 3185 ms
>> 
>> neo4j-sh (?)$ match (n) detach delete n;
>> 
>> +---+
>> 
>> | No data returned. |
>> 
>> +---+
>> 
>> Nodes deleted: 10
>> 
>> Relationships deleted: 9
>> 
>> 1654 ms
>> 
>> neo4j-sh (?)$ quit
>> 
>> wuqour:neo4j-enterprise-2.3.2 mh$ du -sh test.db/neostore*.db
>> 
>> 8,0K test.db/neostore.labeltokenstore.db
>> 
>> 1,4M test.db/neostore.nodestore.db
>> 
>> 3,9M test.db/neostore.propertystore.db
>> 
>> 8,0K test.db/neostore.relationshipgroupstore.db
>> 
>> 3,2M test.db/neostore.relationshipstore.db
>> 
>> 8,0K test.db/neostore.relationshiptypestore.db
>> 
>> 8,0K test.db/neostore.schemastore.db
>> 
>> wuqour:neo4j-enterprise-2.3.2 mh$ bin/neo4j-shell -path test.db
>> 
>> NOTE: Local Neo4j graph database service at 'test.db'
>> 
>> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
>> 
>> 
>> 
>> 
>> 
>> neo4j-sh (?)$ foreach(x in range(1,10) | create (:Person {name:"person 
>> "+x, age : x % 100}));
>> 
>> +---+
>> 
>> | No data returned. |
>> 
>> +---+
>> 
>> Nodes created: 10
>> 
>> Properties set: 20
>> 
>> Labels added: 10
>> 
>> 5911 ms
>> 
>> neo4j-sh (?)$ unwind range(1,10) as x match (p) where id(p) = x match 
>> (p2) where id(p2) = toInt(rand()*10) create (p)-[:KNOWS]->(p2);
>> 
>> +---+
>> 
>> | No data returned. |
>> 
>> +---+
>> 
>> Relationships created: 9
>> 
>> 1897 ms
>> 
>> neo4j-sh (?)$ match (n) detach delete n;
>> 
>> +---+
>> 
>> | No data returned. |
>> 
>> +---+
>> 
>> Nodes deleted: 10
>> 
>> Relationships deleted: 9
>> 
>> 1415 ms
>> 
>> neo4j-sh (?)$ wuqour:neo4j-enterprise-2.3.2 mh$ du -sh test.db/neostore*.db
>> 
>> 8,0K test.db/neostore.labeltokenstore.db
>> 
>> 1,4M test.db/neostore.nodestore.db
>> 
>> 3,9M test.db/neostore.propertystore.db
>> 
>> 8,0K test.db/neostore.relationshipgroupstore.db
>> 
>> 3,2M test.db/neostore.relationshipstore.db
>> 
>> 8,0K test.db/neostore.relationshiptypestore.db
>> 
>> 8,0K test.db/neostore.schemastore.db
>> 
>> 
>>> On Sat, Mar 5, 2016 at 6:43 PM, Jesse Hemingway  wrote:
>>> This is not holding true for my setup, as I've seen my modest 10MB database 
>>> grow to 250MB over the course of repeatedly testing my seeding logic, and 
>>> shutting down the server many times as I made configuration changes for new 
>>> modules, etc. Also, this SO article (outdated? but seems to hold true) 
>>> indicates that space is not reclaimed. I've come across a tool in the 
>>> public domain to accomplish neo4j compaction, implying it isn't (or wasn't) 
>>> automatically supported.
>>> 
>>> I repeated the restart-server test just now, and it does not alter the size 
>>> on disk -- the store is 18.2MB (19.4 on disk), twice my 'fresh' data size, 
>>> and I have reset/reseeded once. Next, I deleted the db, and after 
>>> reseeding, the size is back down to 9.14, with all the same data as before. 
>>> My log files were a drop in the bucket either way.
>>> 
>>> Either way, I'm not going to quibble that if it's more efficient to re-use 
>>> old records than create new ones, it doesn't make sense to 

Re: [Neo4j] Re: Clearing nodes

[Michael Hunger]

Interesting, it works for me:

on empty db, create 100k nodes 100k rels delete everything, check sizes
restart create 100k nodes 100k rels delete everything, check sizes
same size on disk

wuqour:neo4j-enterprise-2.3.2 mh$ rm -rf test*.db

wuqour:neo4j-enterprise-2.3.2 mh$ bin/neo4j-shell -path test.db

NOTE: Local Neo4j graph database service at 'test.db'

Welcome to the Neo4j Shell! Enter 'help' for a list of commands



neo4j-sh (?)$ foreach(x in range(1,10) | create (:Person {name:"person
"+x, age : x % 100}));

+---+

| No data returned. |

+---+

Nodes created: 10

Properties set: 20

Labels added: 10

5996 ms

neo4j-sh (?)$ unwind range(1,10) as x match (p) where id(p) = x match
(p2) where id(p2) = toInt(rand()*10) create (p)-[:KNOWS]->(p2);

+---+

| No data returned. |

+---+

Relationships created: 9

3185 ms

neo4j-sh (?)$ match (n) detach delete n;

+---+

| No data returned. |

+---+

Nodes deleted: 10

Relationships deleted: 9

1654 ms

neo4j-sh (?)$ quit

wuqour:neo4j-enterprise-2.3.2 mh$ du -sh test.db/neostore*.db

8,0K test.db/neostore.labeltokenstore.db

1,4M test.db/neostore.nodestore.db

3,9M test.db/neostore.propertystore.db

8,0K test.db/neostore.relationshipgroupstore.db

3,2M test.db/neostore.relationshipstore.db

8,0K test.db/neostore.relationshiptypestore.db

8,0K test.db/neostore.schemastore.db

wuqour:neo4j-enterprise-2.3.2 mh$ bin/neo4j-shell -path test.db

NOTE: Local Neo4j graph database service at 'test.db'

Welcome to the Neo4j Shell! Enter 'help' for a list of commands



neo4j-sh (?)$ foreach(x in range(1,10) | create (:Person {name:"person
"+x, age : x % 100}));

+---+

| No data returned. |

+---+

Nodes created: 10

Properties set: 20

Labels added: 10

5911 ms

neo4j-sh (?)$ unwind range(1,10) as x match (p) where id(p) = x match
(p2) where id(p2) = toInt(rand()*10) create (p)-[:KNOWS]->(p2);

+---+

| No data returned. |

+---+

Relationships created: 9

1897 ms

neo4j-sh (?)$ match (n) detach delete n;

+---+

| No data returned. |

+---+

Nodes deleted: 10

Relationships deleted: 9

1415 ms

neo4j-sh (?)$ wuqour:neo4j-enterprise-2.3.2 mh$ du -sh test.db/neostore*.db

8,0K test.db/neostore.labeltokenstore.db

1,4M test.db/neostore.nodestore.db

3,9M test.db/neostore.propertystore.db

8,0K test.db/neostore.relationshipgroupstore.db

3,2M test.db/neostore.relationshipstore.db

8,0K test.db/neostore.relationshiptypestore.db

8,0K test.db/neostore.schemastore.db

On Sat, Mar 5, 2016 at 6:43 PM, Jesse Hemingway  wrote:

> This is not holding true for my setup, as I've seen my modest 10MB
> database grow to 250MB over the course of repeatedly testing my seeding
> logic, and shutting down the server many times as I made configuration
> changes for new modules, etc. Also, this SO article
> 
> (outdated? but seems to hold true) indicates that space is not reclaimed.
> I've come across a tool in the public domain to accomplish neo4j
> compaction, implying it isn't (or wasn't) automatically supported.
>
> I repeated the restart-server test just now, and it does not alter the
> size on disk -- the store is 18.2MB (19.4 on disk), twice my 'fresh' data
> size, and I have reset/reseeded once. Next, I deleted the db, and after
> reseeding, the size is back down to 9.14, with all the same data as before.
> My log files were a drop in the bucket either way.
>
> Either way, I'm not going to quibble that if it's more efficient to re-use
> old records than create new ones, it doesn't make sense to aggressively
> compact the database. It would just be nice as an option, e.g. to assist in
> file transfer when moving a database around, etc.
>
>
> On Saturday, March 5, 2016 at 7:18:56 AM UTC-6, Michael Hunger wrote:
>>
>> Unused recoreds are reclaimed after restart, so if you restart after
>> cleaning out then it will.
>> But you can also just delete the db-directory.
>>
>> On Fri, Mar 4, 2016 at 10:52 PM, Jesse Hemingway 
>> wrote:
>>
>>> I actually just delete my database if I want to reset everything to a
>>> clean slate (shutting down server first). We have an auto-seeding solution
>>> that reconstitutes our base data, so that may not be an option for you.
>>> Otherwise, MATCH  DETACH DELETE  does the job.
>>>
>>> But on a related note, I notice that e.g. repeated use of MATCH (n)
>>> DETACH DELETE n (with reseeding in between) does not seem to reclaim
>>> data storage, and the overall database size keeps growing. Is this expected
>>> behavior, or is there some garbage-collection process I need to trigger?
>>>
>>>
>>> On Saturday, February 27, 2016 at 6:43:52 PM UTC-6, Ara wrote:

 Hi ,

Re: [Neo4j] Re: Clearing nodes

[Jesse Hemingway]

This is not holding true for my setup, as I've seen my modest 10MB database 
grow to 250MB over the course of repeatedly testing my seeding logic, and 
shutting down the server many times as I made configuration changes for new 
modules, etc. Also, this SO article 

 
(outdated? but seems to hold true) indicates that space is not reclaimed. 
I've come across a tool in the public domain to accomplish neo4j 
compaction, implying it isn't (or wasn't) automatically supported.

I repeated the restart-server test just now, and it does not alter the size 
on disk -- the store is 18.2MB (19.4 on disk), twice my 'fresh' data size, 
and I have reset/reseeded once. Next, I deleted the db, and after 
reseeding, the size is back down to 9.14, with all the same data as before. 
My log files were a drop in the bucket either way.

Either way, I'm not going to quibble that if it's more efficient to re-use 
old records than create new ones, it doesn't make sense to aggressively 
compact the database. It would just be nice as an option, e.g. to assist in 
file transfer when moving a database around, etc.


On Saturday, March 5, 2016 at 7:18:56 AM UTC-6, Michael Hunger wrote:
>
> Unused recoreds are reclaimed after restart, so if you restart after 
> cleaning out then it will.
> But you can also just delete the db-directory.
>
> On Fri, Mar 4, 2016 at 10:52 PM, Jesse Hemingway  > wrote:
>
>> I actually just delete my database if I want to reset everything to a 
>> clean slate (shutting down server first). We have an auto-seeding solution 
>> that reconstitutes our base data, so that may not be an option for you. 
>> Otherwise, MATCH  DETACH DELETE  does the job.
>>
>> But on a related note, I notice that e.g. repeated use of MATCH (n) 
>> DETACH DELETE n (with reseeding in between) does not seem to reclaim 
>> data storage, and the overall database size keeps growing. Is this expected 
>> behavior, or is there some garbage-collection process I need to trigger?
>>
>>
>> On Saturday, February 27, 2016 at 6:43:52 PM UTC-6, Ara wrote:
>>>
>>> Hi ,
>>>Recently installed Neo4j community version, I'am not able to clear 
>>> the node labels, relationship type from database information. Kindly guide 
>>> me on this issue.Thank you
>>>
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Re: [Neo4j] Re: Clearing nodes

[Michael Hunger]

Unused recoreds are reclaimed after restart, so if you restart after
cleaning out then it will.
But you can also just delete the db-directory.

On Fri, Mar 4, 2016 at 10:52 PM, Jesse Hemingway  wrote:

> I actually just delete my database if I want to reset everything to a
> clean slate (shutting down server first). We have an auto-seeding solution
> that reconstitutes our base data, so that may not be an option for you.
> Otherwise, MATCH  DETACH DELETE  does the job.
>
> But on a related note, I notice that e.g. repeated use of MATCH (n)
> DETACH DELETE n (with reseeding in between) does not seem to reclaim data
> storage, and the overall database size keeps growing. Is this expected
> behavior, or is there some garbage-collection process I need to trigger?
>
>
> On Saturday, February 27, 2016 at 6:43:52 PM UTC-6, Ara wrote:
>>
>> Hi ,
>>Recently installed Neo4j community version, I'am not able to clear the
>> node labels, relationship type from database information. Kindly guide me
>> on this issue.Thank you
>>
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