CDATA driver throws backfill exceeded limit 5120, 5322 with YCSB only read

1 node CB, it is set up with all services.

data is 30 GB index 30 GB
10 M data is loaded into CB with bucket name usertable. Primary index was created.

Load data:

bin/ycsb load couchbase2 -s -P workloads/workloada -jvm-args=-Dcom.couchbase.connectTimeout=300000 -jvm-args=-Dcom.couchbase.kvTimeout=60000 -p couchbase.bucket=usertable -p couchbase.host=172.23.100.191 -p couchbase.password=password -threads 50 -p recordcount=10000000

run :
A Workload is run with only read operation. Workload looks like read_workload.txt . Run YCSB with that workload . Lets name workload as workloadd.

java -cp /root/CDATA/TRYCDATA/lib/cdata.jdbc.couchbase.jar:/root/CASSANDRA-YCSB/CDATA/TRYCDATA/Uninstaller/uninstaller.jar:/root/CASSANDRA-YCSB/YCSB_2/jdbc/conf:/root/CASSANDRA-YCSB/YCSB_2/jdbc/target/jdbc-binding-0.13.0-SNAPSHOT.jar:/root/CASSANDRA-YCSB/YCSB_2/core/target/core-0.13.0-SNAPSHOT.jar:/root/.m2/repository/org/apache/htrace/htrace-core4/4.1.0-incubating/htrace-core4-4.1.0-incubating.jar:/root/.m2/repository/org/apache/geronimo/specs/geronimo-jms_1.1_spec/1.1.1/geronimo-jms_1.1_spec-1.1.1.jar:/root/.m2/repository/org/codehaus/jackson/jackson-core-asl/1.9.4/jackson-core-asl-1.9.4.jar:/root/.m2/repository/org/hdrhistogram/HdrHistogram/2.1.4/HdrHistogram-2.1.4.jar:/root/.m2/repository/org/codehaus/jackson/jackson-mapper-asl/1.9.4/jackson-mapper-asl-1.9.4.jar:/root/.m2/repository/commons-pool/commons-pool/1.5.4/commons-pool-1.5.4.jar:/root/.m2/repository/commons-lang/commons-lang/2.4/commons-lang-2.4.jar:/root/.m2/repository/net/sourceforge/serp/serp/1.13.1/serp-1.13.1.jar:/root/.m2/repository/org/apache/openjpa/openjpa-kernel/2.1.1/openjpa-kernel-2.1.1.jar:/root/.m2/repository/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar:/root/.m2/repository/org/apache/geronimo/specs/geronimo-jta_1.1_spec/1.1.1/geronimo-jta_1.1_spec-1.1.1.jar:/root/.m2/repository/org/apache/openjpa/openjpa-lib/2.1.1/openjpa-lib-2.1.1.jar:/root/.m2/repository/org/apache/openjpa/openjpa-jdbc/2.1.1/openjpa-jdbc-2.1.1.jar com.yahoo.ycsb.Client -db com.yahoo.ycsb.db.JdbcDBClient -P /root/CASSANDRA-YCSB/YCSB_2/workloads/workloada -p db.driver=cdata.jdbc.couchbase.CouchbaseDriver -p "db.url=jdbc:couchbase:User='Administrator';Password='password';Server='http://172.23.100.191'" -p db.user=Administrator -p db.password=password -p recordcount=10000000 -p operationcount=1000000000 -s -threads 1 -load

It throws error

Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"89e744d7-8b3a-410c-9036-5ffff85b2681" backfill exceeded limit 5120, 5322 - cause: "89e744d7-8b3a-410c-9036-5ffff85b2681" backfill exceeded limit 5120, 5322
Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"29d511df-2e5e-4203-bcfc-fbffff099790" backfill exceeded limit 5120, 5322 - cause: "29d511df-2e5e-4203-bcfc-fbffff099790" backfill exceeded limit 5120, 5322
Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"152a46ad-4d4b-47e7-aef4-e974561d449b" backfill exceeded limit 5120, 5322 - cause: "152a46ad-4d4b-47e7-aef4-e974561d449b" backfill exceeded limit 5120, 5322
Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"12fe0833-87b3-480b-b3d6-48fd6e2b0569" backfill exceeded limit 5120, 5322 - cause: "12fe0833-87b3-480b-b3d6-48fd6e2b0569" backfill exceeded limit 5120, 5322
Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"3d2d315c-b0cf-4e53-9465-e4c9e2dd6f8f" backfill exceeded limit 5120, 5322 - cause: "3d2d315c-b0cf-4e53-9465-e4c9e2dd6f8f" backfill exceeded limit 5120, 5322
Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"c92c5ca3-bbae-4639-89ff-d8c2890e1f12" backfill exceeded limit 5120, 5322 - cause: "c92c5ca3-bbae-4639-89ff-d8c2890e1f12" backfill exceeded limit 5120, 5322
Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"99fa2bf1-d579-4f5e-b154-e4a3eaa9a939" backfill exceeded limit 5120, 5322 - cause: "99fa2bf1-d579-4f5e-b154-e4a3eaa9a939" backfill exceeded limit 5120, 5322
Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"7a190c60-9601-48c2-8483-16598aaa43a2" backfill exceeded limit 5120, 5322 - cause: "7a190c60-9601-48c2-8483-16598aaa43a2" backfill exceeded limit 5120, 5322
Error in processing read of table usertable: XcoreXcouchbaseX160X6254.vic: 5000:"06279265-9057-4125-9165-1a82c0140d0f" backfill exceeded limit 5120, 5322 - cause: "06279265-9057-4125-9165-1a82c0140d0f" backfill exceeded limit 5120, 5322
2017-03-03 15:02:07:114 80 sec: 823 operations; 49 current ops/sec; est completion in 1125 days 1 hours [READ: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0] [READ-FAILED: Count=488, Max=628735, Min=129088, Avg=191682.43, 90=213247, 99=458239, 99.9=628735, 99.99=628735]
2017-03-03 15:02:17:114 90 sec: 823 operations; 0 current ops/sec; est completion in 1265 days 16 hours [READ: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0] [READ-FAILED: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0]
2017-03-03 15:02:27:114 100 sec: 823 operations; 0 current ops/sec; est completion in 1406 days 8 hours [READ: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0] [READ-FAILED: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0]
2017-03-03 15:02:37:114 110 sec: 823 operations; 0 current ops/sec; est completion in 1546 days 23 hours [READ: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0] [READ-FAILED: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0]
2017-03-03 15:02:47:114 120 sec: 823 operations; 0 current ops/sec; est completion in 1687 days 14 hours [READ: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0] [READ-FAILED: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0]
2017-03-03 15:02:57:114 130 sec: 823 operations; 0 current ops/sec; est completion in 1828 days 5 hours [READ: Count=0, Max=0, Min=9223372036854775807, Avg=�, 90=0, 99=0, 99.9=0, 99.99=0] [READ-FAILED: Count=0, Max=0, Min=9223372036854775807, Av