PoolServerJ - Tech Support

[50BTC.com]

We are evaluating PoolServerJ for our mining pool, 50btc.com, as replacement for pushpoold. There are few problems we have encountered during testing; can anyone help with them?

We are running Scientific Linux 6.1, java version java-1.6.0-openjdk-1.6.0.0-1.40.1.9.10, poolserverj 0.4.0rc7 (rc2 + rc7 patch), stock bitcoind 0.5.2.

First problem is that currently PoolServerJ doesn't support postgresql properly. For example, with settings

Code:

db.engine=postgresql
db.host=dbserver
db.name=pool
db.schema=public
db.port=5432
db.user=pooluser
db.password=pass

It incorrectly forms connectiong string, it prints
[20:54:18.678] Connecting to DB URL: jdbc:postgresql:pool//dbserver:5432/public?autoReconnect=true
and then always connects to localhost, not "dbserver"

If I understand correctly, specifying connection string in jdbc:postgresql:<database> form can be used only for localhost connections, according to documentation http://jdbc.postgresql.org/documentation/80/connect.html. So jdbc happily ignores dbserver and port, which makes poolserverj connect only to localhost.

We wouldn't mind to fix that issue, but there are no sources for this part of server (shadtools-sql), even in source repository there is only binary .jar. Therefore, we really can't do anything. Currently, for testing we have installed redirecting proxy for postgresql which forwards requests from localhost to real database server, but for production it would be nice to fix that issue properly. This problem is present both in 0.4.0 and git version.

Second problem is that we want users to authorize with any password, as long as they are registered on pool. There is auth engine called AnyPasswordWorkerAuthenticator which supposed to do the trick, but it doesn't do as advertised. Namely, it does allow to log in with any password, but not without password - when logging in with username only (we tried guiminer+poclbm and minerd) it still returns "401 Unauthorized". Of course, it's set up as it's supposed to

Code:

authenticatorEngine=com.shadworld.poolserver.servlet.auth.AnyPasswordWorkerAuthenticator
authenticatorEngine.extraParams=true, false

and I have looked at its simple code a few times but still can't figure out why it won't allow empty password. Could it be that there is a bug in other code which rejects empty password before it's processed by AnyPasswordWorkerAuthenticator?

[EnergyVampire]

Hello, I get this error

Code:

Exception in thread "block-chain-tracker" java.lang.NullPointerException
	at com.shadworld.poolserver.source.daemonhandler.JsonRpcDaemonHandler.doBlockCheck(JsonRpcDaemonHandler.java:83)
	at com.shadworld.poolserver.BlockChainTracker.fireBlockCheck(BlockChainTracker.java:453)
	at com.shadworld.poolserver.BlockChainTracker.run(BlockChainTracker.java:485)

when starting up.

Using: poolserverj-0.4.0rc2

[Remember remember the 5th of November]

Even though I do

source.local.1.rewriteDifficultyTarget=0000000000000000000000000000000000000000000000000000333300000000

###default true = set to false if you want to PoolServerJ as a proxy for non-pool mining
source.local.1.rewriteDifficulty=false

or even

source.local.1.rewriteDifficultyTarget=0000000000000000000000000000000000000000000000000000333300000000

###default true = set to false if you want to PoolServerJ as a proxy for non-pool mining
source.local.1.rewriteDifficulty=true

The difficulty is NOT rewritten. It stays at it's default state

[12gaFacelift]

Someone to install PoolServerJ + Frontend : Win xp - xamp server . first to test and if its working then another box can be used to go public. PM me

thx

[mich]

With merged mining poolserverj writes 'upstream_result' for bitcoin only? How to catch namecoin's upstream_result?

[cablepair]

its in there you just have to change the table section of the config to how you want it to report to your database

[mich]

its in there you just have to change the table section of the config to how you want it to report to your database

You mean 'our_result_bitcoin' and 'our_result_namecoin'? But these columns is our markers - accepted or rejected shares, and I asking about markers of winning shares. Something like upstream_result_bitcoin and upstream_result_namecoin.

[mich]

nobody knows?

[mich]

Code:

4153182 [HttpClient-upstream-work-submit-handler-38] WARN org.eclipse.jetty.util.log - EXPIRED ContentExchange@1175760389=POST//127.0.0.1:8332/#8
[13:54:06.686] JSON-RPC getmemorypool update failed.

How to fix it?

[cablepair]

that means its not connecting to bitcoind

is this happening all the time or just temporarily when you first start up?

because if its not happening all the time I would not worry about it

[mich]

Not every time, random from 5 to 30 min. And when it happens phoenix miner disconnect, then connect back in few seconds.

[Internet151]

Has anyone gotten this to work under Windows and Bitcoin-qt 0.6+?

[maxcarjuzaa]

Hi I am running poolserverj with litecoind.

In order to test it I am running one miner (minerd) , but it had not solve any shares yet and if I connect it to my usual pool I get a share every 10 seconds or so. Do I miss any configuration? Do you have any idea?

Thank you.
Max

[cablepair]

Hi I am running poolserverj with litecoind.

In order to test it I am running one miner (minerd) , but it had not solve any shares yet and if I connect it to my usual pool I get a share every 10 seconds or so. Do I miss any configuration? Do you have any idea?

Thank you.
Max

If memory serves , I dont think lite coin compatibity was ever actually achieved

[Flowz]

Hi,
I'm currently running PoolServerJ, and it working out great!
Getting 23Gh/s!

There is only one thing that concerns me a lot.
I've been getting a lot of 'Broken Pipe', 'EofException' and 'connection refused' errors, with a lot I mean non-stop outputting those exceptions. Everything is still working though, I just wonder why those exception are poping up in such a giant number.

~ Flowz

[Flowz]

Furthermore I would like to point out that,
I get a error which bugs down the whole system:
java.lang.OutOfMemoryError: GC overhead limit exceeded

Temporary solution:
-XX:-UseGCOverheadLimit

(This means it won't look if the garbage collector is like using 98% of the CPU or not, which wil decrease the pool performance a lot I think)

Or I could increase the max heap size:
-Xmx1g

I have 8gig of RAM memory, what is the best heap size for that server?

~ Flowz

[mich]

How to setup log rotation for poolserverj's log files? (by logrotate)

[Bit LC Inc.]

WARNING: With the 0.7.0 release of bitcoind - getmemorypool is removed, which cases the internal work-generation to fail.
Patches for poolserverj needed.

[Lomax42]

Can I get the source code (Mini Http Proxy mini-proxy.tar.gz) would like to add there a separate authorization! powernet34@gmail.com Thank you!

[OgStar]

Can anyone tell me which bitcoin daemon version is the best for PoolServerJ?

I know 0.7 won't work, but will anything below it work? Because I'm trying to figure out the reasons of some bugs I've been getting.

And what about namecoind? What are the patches that it needs to make getmemorypool work with it, and where to find it?

Thank you!