PostCommentOnResourceAction, DeleteCommentOnResourceAction NullPointers Error

[Sayat Satybaldiev]

I'm wondering if someone experienced NullPointers Errors on PostCommentOnResourceAction, DeleteCommentOnResourceAction? We're using slightly modified SymmetricHighUpdateActions file with non zero parameters for post and delete comment actions and new BG client as well as the old produce following error:

****** Benchmarking  ********

BGClient is in onetime mode.

*****max execution time specified : 100

BG Client: ThreadCount =10

Loading workload...

0

Create fragments in workload init phase

Creating the initial zipfian probabilities...

Sum of original probs = 0.9999999999999996

Initial Zipfian probabilities are created.

Done creating clusters.

ClusterId0, 100

ZipfianMean=0.27 Usercount=100 numMaxClusters=1; 20.0% of members have, 0.5379732061994167, initial probability.

ZipfianMean=0.27 Usercount=100 numMaxClusters=1; 20.0% of members have, 0.537973206199417 clustering(new)probability.

Time to create fragments : 4 msec

After init: Fri Nov 22 19:37:34 PST 2013

EXECUTIONDONE

Connected

Starting benchmark.

 0 sec: 0 actions;  0 sec: 0 operations; 

Maximum execution time specified as: 100 secs

java.lang.NullPointerException

at edu.usc.bg.workloads.CoreWorkload.doActionPostComments(Unknown Source)

at edu.usc.bg.workloads.CoreWorkload.doTransaction(Unknown Source)

at edu.usc.bg.base.ClientThread.run(Unknown Source)

java.lang.NullPointerException

at edu.usc.bg.workloads.CoreWorkload.doActionPostComments(Unknown Source)

at edu.usc.bg.workloads.CoreWorkload.doTransaction(Unknown Source)

at edu.usc.bg.base.ClientThread.run(Unknown Source)

DONE: 0

Here's params from SymmetricHighUpdateActions file for user actions:

#user actions

ViewProfileAction=0.35

ListFriendsAction=0.05

ViewFriendReqAction=0.05

InviteFriendAction=0.04

AcceptFriendReqAction=0.02

RejectFriendReqAction=0.02

ThawFriendshipAction=0.02

ViewTopKResourcesAction=0 #switched probabilities of this two params

ViewCommentsOnResourceAction=0.1

PostCommentOnResourceAction=0.35

DeleteCommentOnResourceAction=0

ViewNewsFeedAction=0

and command arguments:

    java -Xmx1024M -cp $BG_HOME/build/bg.jar:$BG_HOME/db/MongoDB/lib/* edu.usc.bg.BGMainClass \

    onetime -t -db mongoDB.MongoDbClient \

    -P $BG_HOME/workloads/SymmetricHighUpdateActions -s \

    -p mongodb.url=$HOST_IP:27017 -p threadcount=$THREAD_COUNT -p mongodb.writeConcern=strict \

    -p mongodb.database=$DB_NAME -p exportfile=thread0.10.07.txt -p ratingmode=false \

    -p maxexecutiontime=$MAX_EXEC_TIME -p initapproach=querydata -p usercount=$USER_COUNT

[Sumita Barahmand]

Hi,

Please replace -p initapproach=querydata with -p initapproach=deterministic and add the following properties to the execution command: -p numloadthreads=x (where x is the number of threads you used to load your database) and -P populateFile (the file you used to load your database).

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[Sayat Satybaldiev]

Hi Sumita,

Yep, that works! Thank you.

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