[
https://issues.apache.org/jira/browse/HBASE-25619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Danil Lipovoy updated HBASE-25619:
----------------------------------
Description:
I have found performance issues. YCSB tests show:
*Operations per second (batch 1000)*
| |*1.4.13*|*1.6.0*|*2.2.6*|*2.4.1*|*comments*|
|INSERTS|68|68|75|76|< this is fine|
|GETS|92|100|72|48|< 50% less|
|FLUSHED GETS|126|141|120|108|< not good |
|GET+INSERT|69|71|68|66| |
GETS - means gets right after inserts.
FLUSHED GETS - after flush and major compation
All numbers are average of 3 runs.
For example GETS 2.4.1 => (45 + 49 + 50) / 3 = 48 got from:
— run 01 hdl300_LRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 108
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 45
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 76
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
— run 02 hdl300_LRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 109
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 49
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 77
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
— run 03 hdl300_LRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 108
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 50
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 76
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 65
But always were 4 runs (not 3). First run for warm up and excluded from
aggregation (usually it is faster then all runs later).
All test done with AdaptiveLRU
(https://issues.apache.org/jira/browse/HBASE-23887)
This is because:
# RS on old LRU just often fall under pressure.
# It is faster than current version (much faster when server powerful).
For example on my PC (AMD Ryzen 7 2700X Eight-Core Processor, 32 GB MEM, SSD)
this is current version LRU (1.4.13):
--
--- run 01 hdl300_oldLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 116
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 76
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 67
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 65
--- run 02 hdl300_oldLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 115
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 81
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 66
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 67
--- run 03 hdl300_oldLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 116
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 82
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 66
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
This is new version (1.4.13):
– run 01 hdl300_newLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 128
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 93
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 67
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 70
— run 02 hdl300_newLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 126
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 93
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 68
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 69
— run 03 hdl300_newLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 125
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 91
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 68
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 67
All test done with the same params:
<configuration>
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property>
<property>
<name>hbase.tmp.dir</name>
<value>./tmp/hb</value>
</property>
<property>
<name>hbase.rootdir</name>
<value>/tmp/hbase</value>
</property>
<property>
<name>hbase.unsafe.stream.capability.enforce</name>
<value>false</value>
</property>
<property>
<name>zookeeper.session.timeout</name>
<value>120000</value>
</property>
<property>
<name>hbase.rpc.timeout</name>
<value>120000</value>
</property>
<property>
<name>hbase.regionserver.handler.count</name>
<value>300</value>
</property>
<property>
<name>hbase.regionserver.metahandler.count</name>
<value>30</value>
</property>
<property>
<name>hbase.regionserver.maxlogs</name>
<value>200</value>
</property>
<property>
<name>hbase.hregion.memstore.flush.size</name>
<value>1342177280</value>
</property>
<property>
<name>hbase.hregion.memstore.block.multiplier</name>
<value>6</value>
</property>
<property>
<name>hbase.hstore.compactionThreshold</name>
<value>2</value>
</property>
<property>
<name>hbase.hstore.blockingStoreFiles</name>
<value>200</value>
</property>
<property>
<name>hbase.regionserver.optionalcacheflushinterval</name>
<value>18000000</value>
</property>
<property>
<name>hbase.regionserver.thread.compaction.large</name>
<value>12</value>
</property>
<property>
<name>hbase.regionserver.wal.enablecompression</name>
<value>true</value>
</property>
<property>
<name>hbase.server.compactchecker.interval.multiplier</name>
<value>200</value>
</property>
<property>
<name>hbase.rest.threads.min</name>
<value>8</value>
</property>
<property>
<name>hbase.rest.threads.max</name>
<value>150</value>
</property>
<property>
<name>hbase.thrift.minWorkerThreads</name>
<value>200</value>
</property>
<property>
<name>hbase.regionserver.thread.compaction.small</name>
<value>6</value>
</property>
<property>
<name>hbase.ipc.server.read.threadpool.size</name>
<value>60</value>
</property>
<property>
<name>hbase.lru.cache.heavy.eviction.count.limit</name>
<value>0</value>
</property>
<property>
<name>hbase.lru.cache.heavy.eviction.mb.size.limit</name>
<value>200</value>
</property>
<property>
<name>hbase.lru.cache.heavy.eviction.overhead.coefficient</name>
<value>0.01</value>
</property>
<property>
<name>hbase.wal.provider</name>
<value>multiwal</value>
</property>
</configuration>
And everywhere export HBASE_HEAPSIZE=22G
ZK is separate (downloaded from apache site) because RS just falls when use
build-in ZK.
Full logs in an attachment.
Every one can repeat the tests. I used modificated YCSB (added batchsize)
[https://github.com/pustota2009/YCSB.git]
It is possible just:
1. Download and set up ZK
[https://www.apache.org/dyn/closer.lua/zookeeper/zookeeper-3.6.2/apache-zookeeper-3.6.2-bin.tar.gz]
2. Download and set up HBase ([https://hbase.apache.org/downloads.html)]
3. Tune HBase (with params above)
4. Download [^scripts.zip] (there are YCSB and scripts) into hbase dir - the
same level where bin, conf, log etc
5. Execute run-4-tests-30t-LRU.sh.
It will works about 1,5 hours and collect the results into
hdl300_LRU_thr30_reg100.res and results_agg.txt
Maybe somebody would interested to investigate the cause this degradation and
fix it.
was:
I have found performance issues. YCSB tests show:
| |*Operations per second (batch 1000)*|
| |*1.4.13*|*1.6.0*|*2.2.6*|*2.4.1*|
|INSERTS|68|68|75|76|
|GETS|92|100|72|48|
|FLUSHED GETS|126|141|120|108|
|GET+INSERT|69|71|68|66|
GETS - means gets right after inserts.
FLUSHED GETS - after flush and major compation
All numbers are average of 3 runs.
For example GETS 2.4.1 => (45 + 49 + 50) / 3 = 48 got from:
— run 01 hdl300_LRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 108
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 45
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 76
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
— run 02 hdl300_LRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 109
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 49
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 77
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
— run 03 hdl300_LRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 108
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 50
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 76
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 65
But always were 4 runs (not 3). First run for warm up and excluded from
aggregation (usually it is faster then all runs later).
All test done with AdaptiveLRU
(https://issues.apache.org/jira/browse/HBASE-23887)
This is because:
# RS on old LRU just often fall under pressure.
# It is faster than current version (much faster when server powerful).
For example on my PC (AMD Ryzen 7 2700X Eight-Core Processor, 32 GB MEM, SSD)
this is current version LRU (1.4.13):
--
--- run 01 hdl300_oldLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 116
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 76
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 67
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 65
--- run 02 hdl300_oldLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 115
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 81
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 66
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 67
--- run 03 hdl300_oldLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 116
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 82
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 66
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
This is new version (1.4.13):
– run 01 hdl300_newLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 128
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 93
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 67
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 70
— run 02 hdl300_newLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 126
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 93
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 68
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 69
— run 03 hdl300_newLRU_thr30_reg100 —
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 125
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 91
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 68
thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 67
All test done with the same params:
<configuration>
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property>
<property>
<name>hbase.tmp.dir</name>
<value>./tmp/hb</value>
</property>
<property>
<name>hbase.rootdir</name>
<value>/tmp/hbase</value>
</property>
<property>
<name>hbase.unsafe.stream.capability.enforce</name>
<value>false</value>
</property>
<property>
<name>zookeeper.session.timeout</name>
<value>120000</value>
</property>
<property>
<name>hbase.rpc.timeout</name>
<value>120000</value>
</property>
<property>
<name>hbase.regionserver.handler.count</name>
<value>300</value>
</property>
<property>
<name>hbase.regionserver.metahandler.count</name>
<value>30</value>
</property>
<property>
<name>hbase.regionserver.maxlogs</name>
<value>200</value>
</property>
<property>
<name>hbase.hregion.memstore.flush.size</name>
<value>1342177280</value>
</property>
<property>
<name>hbase.hregion.memstore.block.multiplier</name>
<value>6</value>
</property>
<property>
<name>hbase.hstore.compactionThreshold</name>
<value>2</value>
</property>
<property>
<name>hbase.hstore.blockingStoreFiles</name>
<value>200</value>
</property>
<property>
<name>hbase.regionserver.optionalcacheflushinterval</name>
<value>18000000</value>
</property>
<property>
<name>hbase.regionserver.thread.compaction.large</name>
<value>12</value>
</property>
<property>
<name>hbase.regionserver.wal.enablecompression</name>
<value>true</value>
</property>
<property>
<name>hbase.server.compactchecker.interval.multiplier</name>
<value>200</value>
</property>
<property>
<name>hbase.rest.threads.min</name>
<value>8</value>
</property>
<property>
<name>hbase.rest.threads.max</name>
<value>150</value>
</property>
<property>
<name>hbase.thrift.minWorkerThreads</name>
<value>200</value>
</property>
<property>
<name>hbase.regionserver.thread.compaction.small</name>
<value>6</value>
</property>
<property>
<name>hbase.ipc.server.read.threadpool.size</name>
<value>60</value>
</property>
<property>
<name>hbase.lru.cache.heavy.eviction.count.limit</name>
<value>0</value>
</property>
<property>
<name>hbase.lru.cache.heavy.eviction.mb.size.limit</name>
<value>200</value>
</property>
<property>
<name>hbase.lru.cache.heavy.eviction.overhead.coefficient</name>
<value>0.01</value>
</property>
<property>
<name>hbase.wal.provider</name>
<value>multiwal</value>
</property>
</configuration>
And everywhere export HBASE_HEAPSIZE=22G
ZK is separate (downloaded from apache site) because RS just falls when use
build-in ZK.
Full logs in an attachment.
Every one can repeat the tests. I used modificated YCSB (added batchsize)
[https://github.com/pustota2009/YCSB.git]
It is possible just:
1. Download and set up ZK
[https://www.apache.org/dyn/closer.lua/zookeeper/zookeeper-3.6.2/apache-zookeeper-3.6.2-bin.tar.gz]
2. Download and set up HBase ([https://hbase.apache.org/downloads.html)]
3. Tune HBase (with params above)
4. Download [^scripts.zip] (there are YCSB and scripts) into hbase dir - the
same level where bin, conf, log etc
5. Execute run-4-tests-30t-LRU.sh.
It will works about 1,5 hours and collect the results into
hdl300_LRU_thr30_reg100.res and results_agg.txt
Maybe somebody would interested to investigate the cause this degradation and
fix it.
> 50% reading performance degradation 2.4.1 over 1.6.0
> ----------------------------------------------------
>
> Key: HBASE-25619
> URL: https://issues.apache.org/jira/browse/HBASE-25619
> Project: HBase
> Issue Type: Bug
> Reporter: Danil Lipovoy
> Priority: Major
> Attachments: logs.zip, scripts.zip
>
>
> I have found performance issues. YCSB tests show:
> *Operations per second (batch 1000)*
>
> | |*1.4.13*|*1.6.0*|*2.2.6*|*2.4.1*|*comments*|
> |INSERTS|68|68|75|76|< this is fine|
> |GETS|92|100|72|48|< 50% less|
> |FLUSHED GETS|126|141|120|108|< not good |
> |GET+INSERT|69|71|68|66| |
> GETS - means gets right after inserts.
> FLUSHED GETS - after flush and major compation
> All numbers are average of 3 runs.
> For example GETS 2.4.1 => (45 + 49 + 50) / 3 = 48 got from:
> — run 01 hdl300_LRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 108
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 45
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 76
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
> — run 02 hdl300_LRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 109
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 49
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 77
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
> — run 03 hdl300_LRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 108
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 50
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 76
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 65
> But always were 4 runs (not 3). First run for warm up and excluded from
> aggregation (usually it is faster then all runs later).
> All test done with AdaptiveLRU
> (https://issues.apache.org/jira/browse/HBASE-23887)
> This is because:
> # RS on old LRU just often fall under pressure.
> # It is faster than current version (much faster when server powerful).
> For example on my PC (AMD Ryzen 7 2700X Eight-Core Processor, 32 GB MEM,
> SSD) this is current version LRU (1.4.13):
> --
> --- run 01 hdl300_oldLRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 116
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 76
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 67
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 65
> --- run 02 hdl300_oldLRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 115
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 81
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 66
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 67
> --- run 03 hdl300_oldLRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 116
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 82
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 66
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 66
> This is new version (1.4.13):
> – run 01 hdl300_newLRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 128
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 93
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 67
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 70
> — run 02 hdl300_newLRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 126
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 93
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 68
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 69
> — run 03 hdl300_newLRU_thr30_reg100 —
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 fget ops= 125
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 get ops= 91
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 ins ops= 68
> thr30 cnt100000 tim300 num0 max1 bch1000 reg100 upd ops= 67
> All test done with the same params:
> <configuration>
> <property>
> <name>hbase.cluster.distributed</name>
> <value>true</value>
> </property>
> <property>
> <name>hbase.tmp.dir</name>
> <value>./tmp/hb</value>
> </property>
> <property>
> <name>hbase.rootdir</name>
> <value>/tmp/hbase</value>
> </property>
> <property>
> <name>hbase.unsafe.stream.capability.enforce</name>
> <value>false</value>
> </property>
> <property>
> <name>zookeeper.session.timeout</name>
> <value>120000</value>
> </property>
> <property>
> <name>hbase.rpc.timeout</name>
> <value>120000</value>
> </property>
> <property>
> <name>hbase.regionserver.handler.count</name>
> <value>300</value>
> </property>
> <property>
> <name>hbase.regionserver.metahandler.count</name>
> <value>30</value>
> </property>
> <property>
> <name>hbase.regionserver.maxlogs</name>
> <value>200</value>
> </property>
> <property>
> <name>hbase.hregion.memstore.flush.size</name>
> <value>1342177280</value>
> </property>
> <property>
> <name>hbase.hregion.memstore.block.multiplier</name>
> <value>6</value>
> </property>
> <property>
> <name>hbase.hstore.compactionThreshold</name>
> <value>2</value>
> </property>
> <property>
> <name>hbase.hstore.blockingStoreFiles</name>
> <value>200</value>
> </property>
> <property>
> <name>hbase.regionserver.optionalcacheflushinterval</name>
> <value>18000000</value>
> </property>
> <property>
> <name>hbase.regionserver.thread.compaction.large</name>
> <value>12</value>
> </property>
> <property>
> <name>hbase.regionserver.wal.enablecompression</name>
> <value>true</value>
> </property>
> <property>
> <name>hbase.server.compactchecker.interval.multiplier</name>
> <value>200</value>
> </property>
> <property>
> <name>hbase.rest.threads.min</name>
> <value>8</value>
> </property>
> <property>
> <name>hbase.rest.threads.max</name>
> <value>150</value>
> </property>
> <property>
> <name>hbase.thrift.minWorkerThreads</name>
> <value>200</value>
> </property>
> <property>
> <name>hbase.regionserver.thread.compaction.small</name>
> <value>6</value>
> </property>
> <property>
> <name>hbase.ipc.server.read.threadpool.size</name>
> <value>60</value>
> </property>
> <property>
> <name>hbase.lru.cache.heavy.eviction.count.limit</name>
> <value>0</value>
> </property>
> <property>
> <name>hbase.lru.cache.heavy.eviction.mb.size.limit</name>
> <value>200</value>
> </property>
> <property>
> <name>hbase.lru.cache.heavy.eviction.overhead.coefficient</name>
> <value>0.01</value>
> </property>
> <property>
> <name>hbase.wal.provider</name>
> <value>multiwal</value>
> </property>
> </configuration>
> And everywhere export HBASE_HEAPSIZE=22G
> ZK is separate (downloaded from apache site) because RS just falls when use
> build-in ZK.
> Full logs in an attachment.
> Every one can repeat the tests. I used modificated YCSB (added batchsize)
> [https://github.com/pustota2009/YCSB.git]
> It is possible just:
> 1. Download and set up ZK
> [https://www.apache.org/dyn/closer.lua/zookeeper/zookeeper-3.6.2/apache-zookeeper-3.6.2-bin.tar.gz]
> 2. Download and set up HBase ([https://hbase.apache.org/downloads.html)]
> 3. Tune HBase (with params above)
> 4. Download [^scripts.zip] (there are YCSB and scripts) into hbase dir - the
> same level where bin, conf, log etc
> 5. Execute run-4-tests-30t-LRU.sh.
>
> It will works about 1,5 hours and collect the results into
> hdl300_LRU_thr30_reg100.res and results_agg.txt
> Maybe somebody would interested to investigate the cause this degradation and
> fix it.
>
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