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From mingda li <limingda1...@gmail.com>
Subject Re: Time of Multiple Joins in AsterixDB
Date Wed, 21 Dec 2016 05:26:45 GMT
Dear Yingyi,
1. For the returned of  :http://<master node>:19002/admin/cluster

{
    "cc": {
        "configUri": "http://scai01.cs.ucla.edu:19002/admin/cluster/cc/config",
        "statsUri": "http://scai01.cs.ucla.edu:19002/admin/cluster/cc/stats",
        "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/cc/threaddump"
    },
    "config": {
        "api.port": 19002,
        "cc.java.opts": "-Xmx1024m",
        "cluster.partitions": {
            "0": "ID:0, Original Node: red16, IODevice: 0, Active Node: red16",
            "1": "ID:1, Original Node: red15, IODevice: 0, Active Node: red15",
            "2": "ID:2, Original Node: red14, IODevice: 0, Active Node: red14",
            "3": "ID:3, Original Node: red13, IODevice: 0, Active Node: red13",
            "4": "ID:4, Original Node: red12, IODevice: 0, Active Node: red12",
            "5": "ID:5, Original Node: red11, IODevice: 0, Active Node: red11",
            "6": "ID:6, Original Node: red10, IODevice: 0, Active Node: red10",
            "7": "ID:7, Original Node: red9, IODevice: 0, Active Node: red9",
            "8": "ID:8, Original Node: red8, IODevice: 0, Active Node: red8",
            "9": "ID:9, Original Node: red7, IODevice: 0, Active Node: red7",
            "10": "ID:10, Original Node: red6, IODevice: 0, Active Node: red6",
            "11": "ID:11, Original Node: red5, IODevice: 0, Active Node: red5",
            "12": "ID:12, Original Node: red4, IODevice: 0, Active Node: red4",
            "13": "ID:13, Original Node: red3, IODevice: 0, Active Node: red3",
            "14": "ID:14, Original Node: red2, IODevice: 0, Active Node: red2",
            "15": "ID:15, Original Node: red, IODevice: 0, Active Node: red"
        },
        "compiler.framesize": 32768,
        "compiler.groupmemory": 33554432,
        "compiler.joinmemory": 33554432,
        "compiler.pregelix.home": "~/pregelix",
        "compiler.sortmemory": 33554432,
        "core.dump.paths": {
            "red": "/home/clash/asterixStorage/asterixdb5/red/coredump",
            "red10": "/home/clash/asterixStorage/asterixdb5/red10/coredump",
            "red11": "/home/clash/asterixStorage/asterixdb5/red11/coredump",
            "red12": "/home/clash/asterixStorage/asterixdb5/red12/coredump",
            "red13": "/home/clash/asterixStorage/asterixdb5/red13/coredump",
            "red14": "/home/clash/asterixStorage/asterixdb5/red14/coredump",
            "red15": "/home/clash/asterixStorage/asterixdb5/red15/coredump",
            "red16": "/home/clash/asterixStorage/asterixdb5/red16/coredump",
            "red2": "/home/clash/asterixStorage/asterixdb5/red2/coredump",
            "red3": "/home/clash/asterixStorage/asterixdb5/red3/coredump",
            "red4": "/home/clash/asterixStorage/asterixdb5/red4/coredump",
            "red5": "/home/clash/asterixStorage/asterixdb5/red5/coredump",
            "red6": "/home/clash/asterixStorage/asterixdb5/red6/coredump",
            "red7": "/home/clash/asterixStorage/asterixdb5/red7/coredump",
            "red8": "/home/clash/asterixStorage/asterixdb5/red8/coredump",
            "red9": "/home/clash/asterixStorage/asterixdb5/red9/coredump"
        },
        "feed.central.manager.port": 4500,
        "feed.max.threshold.period": 5,
        "feed.memory.available.wait.timeout": 10,
        "feed.memory.global.budget": 67108864,
        "feed.pending.work.threshold": 50,
        "feed.port": 19003,
        "instance.name": "DEFAULT_INSTANCE",
        "log.level": "WARNING",
        "max.wait.active.cluster": 60,
        "metadata.callback.port": 0,
        "metadata.node": "red16",
        "metadata.partition": "ID:0, Original Node: red16, IODevice:
0, Active Node: red16",
        "metadata.port": 0,
        "metadata.registration.timeout.secs": 60,
        "nc.java.opts": "-Xmx1024m",
        "node.partitions": {
            "red": ["ID:15, Original Node: red, IODevice: 0, Active Node: red"],
            "red10": ["ID:6, Original Node: red10, IODevice: 0, Active
Node: red10"],
            "red11": ["ID:5, Original Node: red11, IODevice: 0, Active
Node: red11"],
            "red12": ["ID:4, Original Node: red12, IODevice: 0, Active
Node: red12"],
            "red13": ["ID:3, Original Node: red13, IODevice: 0, Active
Node: red13"],
            "red14": ["ID:2, Original Node: red14, IODevice: 0, Active
Node: red14"],
            "red15": ["ID:1, Original Node: red15, IODevice: 0, Active
Node: red15"],
            "red16": ["ID:0, Original Node: red16, IODevice: 0, Active
Node: red16"],
            "red2": ["ID:14, Original Node: red2, IODevice: 0, Active
Node: red2"],
            "red3": ["ID:13, Original Node: red3, IODevice: 0, Active
Node: red3"],
            "red4": ["ID:12, Original Node: red4, IODevice: 0, Active
Node: red4"],
            "red5": ["ID:11, Original Node: red5, IODevice: 0, Active
Node: red5"],
            "red6": ["ID:10, Original Node: red6, IODevice: 0, Active
Node: red6"],
            "red7": ["ID:9, Original Node: red7, IODevice: 0, Active
Node: red7"],
            "red8": ["ID:8, Original Node: red8, IODevice: 0, Active
Node: red8"],
            "red9": ["ID:7, Original Node: red9, IODevice: 0, Active
Node: red9"]
        },
        "node.stores": {
            "red": ["/home/clash/asterixStorage/asterixdb5/red/storage"],
            "red10": ["/home/clash/asterixStorage/asterixdb5/red10/storage"],
            "red11": ["/home/clash/asterixStorage/asterixdb5/red11/storage"],
            "red12": ["/home/clash/asterixStorage/asterixdb5/red12/storage"],
            "red13": ["/home/clash/asterixStorage/asterixdb5/red13/storage"],
            "red14": ["/home/clash/asterixStorage/asterixdb5/red14/storage"],
            "red15": ["/home/clash/asterixStorage/asterixdb5/red15/storage"],
            "red16": ["/home/clash/asterixStorage/asterixdb5/red16/storage"],
            "red2": ["/home/clash/asterixStorage/asterixdb5/red2/storage"],
            "red3": ["/home/clash/asterixStorage/asterixdb5/red3/storage"],
            "red4": ["/home/clash/asterixStorage/asterixdb5/red4/storage"],
            "red5": ["/home/clash/asterixStorage/asterixdb5/red5/storage"],
            "red6": ["/home/clash/asterixStorage/asterixdb5/red6/storage"],
            "red7": ["/home/clash/asterixStorage/asterixdb5/red7/storage"],
            "red8": ["/home/clash/asterixStorage/asterixdb5/red8/storage"],
            "red9": ["/home/clash/asterixStorage/asterixdb5/red9/storage"]
        },
        "plot.activate": false,
        "replication.enabled": false,
        "replication.factor": 2,
        "replication.log.batchsize": 4096,
        "replication.log.buffer.numpages": 8,
        "replication.log.buffer.pagesize": 131072,
        "replication.max.remote.recovery.attempts": 5,
        "replication.timeout": 30,
        "storage.buffercache.maxopenfiles": 2147483647,
        "storage.buffercache.pagesize": 131072,
        "storage.buffercache.size": 536870912,
        "storage.lsm.bloomfilter.falsepositiverate": 0.01,
        "storage.memorycomponent.globalbudget": 536870912,
        "storage.memorycomponent.numcomponents": 2,
        "storage.memorycomponent.numpages": 256,
        "storage.memorycomponent.pagesize": 131072,
        "storage.metadata.memorycomponent.numpages": 256,
        "transaction.log.dirs": {
            "red": "/home/clash/asterixStorage/asterixdb5/red/txnlog",
            "red10": "/home/clash/asterixStorage/asterixdb5/red10/txnlog",
            "red11": "/home/clash/asterixStorage/asterixdb5/red11/txnlog",
            "red12": "/home/clash/asterixStorage/asterixdb5/red12/txnlog",
            "red13": "/home/clash/asterixStorage/asterixdb5/red13/txnlog",
            "red14": "/home/clash/asterixStorage/asterixdb5/red14/txnlog",
            "red15": "/home/clash/asterixStorage/asterixdb5/red15/txnlog",
            "red16": "/home/clash/asterixStorage/asterixdb5/red16/txnlog",
            "red2": "/home/clash/asterixStorage/asterixdb5/red2/txnlog",
            "red3": "/home/clash/asterixStorage/asterixdb5/red3/txnlog",
            "red4": "/home/clash/asterixStorage/asterixdb5/red4/txnlog",
            "red5": "/home/clash/asterixStorage/asterixdb5/red5/txnlog",
            "red6": "/home/clash/asterixStorage/asterixdb5/red6/txnlog",
            "red7": "/home/clash/asterixStorage/asterixdb5/red7/txnlog",
            "red8": "/home/clash/asterixStorage/asterixdb5/red8/txnlog",
            "red9": "/home/clash/asterixStorage/asterixdb5/red9/txnlog"
        },
        "txn.commitprofiler.reportinterval": 5,
        "txn.job.recovery.memorysize": 67108864,
        "txn.lock.escalationthreshold": 1000,
        "txn.lock.shrinktimer": 5000,
        "txn.lock.timeout.sweepthreshold": 10000,
        "txn.lock.timeout.waitthreshold": 60000,
        "txn.log.buffer.numpages": 8,
        "txn.log.buffer.pagesize": 131072,
        "txn.log.checkpoint.history": 0,
        "txn.log.checkpoint.lsnthreshold": 67108864,
        "txn.log.checkpoint.pollfrequency": 120,
        "txn.log.partitionsize": 268435456,
        "web.port": 19001,
        "web.queryinterface.port": 19006,
        "web.secondary.port": 19005
    },
    "fullShutdownUri":
"http://scai01.cs.ucla.edu:19002/admin/shutdown?all=true",
    "metadata_node": "red16",
    "ncs": [
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red15/config",
            "node_id": "red15",
            "partitions": [{
                "active": true,
                "partition_id": "partition_1"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red15/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red15/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red14/config",
            "node_id": "red14",
            "partitions": [{
                "active": true,
                "partition_id": "partition_2"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red14/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red14/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red16/config",
            "node_id": "red16",
            "partitions": [{
                "active": true,
                "partition_id": "partition_0"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red16/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red16/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red11/config",
            "node_id": "red11",
            "partitions": [{
                "active": true,
                "partition_id": "partition_5"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red11/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red11/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red10/config",
            "node_id": "red10",
            "partitions": [{
                "active": true,
                "partition_id": "partition_6"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red10/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red10/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red13/config",
            "node_id": "red13",
            "partitions": [{
                "active": true,
                "partition_id": "partition_3"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red13/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red13/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red12/config",
            "node_id": "red12",
            "partitions": [{
                "active": true,
                "partition_id": "partition_4"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red12/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red12/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red6/config",
            "node_id": "red6",
            "partitions": [{
                "active": true,
                "partition_id": "partition_10"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red6/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red6/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red/config",
            "node_id": "red",
            "partitions": [{
                "active": true,
                "partition_id": "partition_15"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red5/config",
            "node_id": "red5",
            "partitions": [{
                "active": true,
                "partition_id": "partition_11"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red5/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red5/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red8/config",
            "node_id": "red8",
            "partitions": [{
                "active": true,
                "partition_id": "partition_8"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red8/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red8/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red7/config",
            "node_id": "red7",
            "partitions": [{
                "active": true,
                "partition_id": "partition_9"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red7/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red7/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red2/config",
            "node_id": "red2",
            "partitions": [{
                "active": true,
                "partition_id": "partition_14"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red2/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red2/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red4/config",
            "node_id": "red4",
            "partitions": [{
                "active": true,
                "partition_id": "partition_12"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red4/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red4/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red3/config",
            "node_id": "red3",
            "partitions": [{
                "active": true,
                "partition_id": "partition_13"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red3/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red3/threaddump"
        },
        {
            "configUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red9/config",
            "node_id": "red9",
            "partitions": [{
                "active": true,
                "partition_id": "partition_7"
            }],
            "state": "ACTIVE",
            "statsUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red9/stats",
            "threadDumpUri":
"http://scai01.cs.ucla.edu:19002/admin/cluster/node/red9/threaddump"
        }
    ],
    "shutdownUri": "http://scai01.cs.ucla.edu:19002/admin/shutdown",
    "state": "ACTIVE",
    "versionUri": "http://scai01.cs.ucla.edu:19002/admin/version"
}

2.Catalog_return:2.28G

catalog_sales:31.01G

inventory:8.63G

3.As for Pig and Hive, I always use the default configuration. I didn't set
the partition things for them. And for Spark, we use 200 partitions, which
may be improved and just not bad. For AsterixDB, I also set the cluster
using default value of partition and JVM things (I didn't manually set
these parameters).



On Tue, Dec 20, 2016 at 5:58 PM, Yingyi Bu <buyingyi@gmail.com> wrote:

> Mingda,
>
>      1. Can you paste the returned JSON of http://<master
> node>:19002/admin/cluster at your side? (Pls replace <master node> with the
> actual master node name or IP)
>      2. Can you list the individual size of each dataset involved in the
> query, e.g., catalog_returns, catalog_sales, and inventory?  (I assume
> 100GB is the overall size?)
>      3. Do Spark/Hive/Pig saturate all CPUs on all machines, i.e., how many
> partitions are running on each machine?  (It seems that your AsterixDB
> configuration wouldn't saturate all CPUs for queries --- in the current
> AsterixDB master, the computation parallelism is set to be the same as the
> storage parallelism (i.e., the number of iodevices on each NC). I've
> submitted a new patch that allow flexible computation parallelism, which
> should be able to get merged into master very soon.)
>      Thanks!
>
> Best,
> Yingyi
>
> On Tue, Dec 20, 2016 at 5:44 PM, mingda li <limingda1993@gmail.com> wrote:
>
> > Oh, sure. When we test the 100G multiple join, we find AsterixDB is
> slower
> > than Spark (but still faster than Pig and Hive).
> > I can share with you the both plots: 1-10G.eps and 1-100G.eps. (We will
> > only use 1-10G.eps in our paper).
> > And thanks for Ian's advice:* The dev list generally strips attachments.
> > Maybe you can just put the config inline? Or link to a pastebin/gist?*
> > I know why you can't see the attachments. So I move the plots with two
> > documents to my Dropbox.
> > You can find the
> > 1-10G.eps here: https://www.dropbox.com/s/rk3xg6gigsfcuyq/1-10G.eps?dl=0
> > 1-100G.eps here:https://www.dropbox.com/s/tyxnmt6ehau2ski/1-100G.eps?
> dl=0
> > cc_conf.pdf here: https://www.dropbox.com/s/y3of1s17qdstv5f/cc_conf.pdf?
> > dl=0
> > CompleteQuery.pdf here:
> > https://www.dropbox.com/s/lml3fzxfjcmf2c1/CompleteQuery.pdf?dl=0
> >
> > On Tue, Dec 20, 2016 at 4:40 PM, Tyson Condie <tcondie.ucla@gmail.com>
> > wrote:
> >
> > > Mingda: Please also share the numbers for 100GB, which show AsterixDB
> not
> > > quite doing as well as Spark. These 100GB results will not be in our
> > > submission version, since they’re not needed for the desired message:
> > > picking the right join order matters. Nevertheless, I’d like to get a
> > > better understanding of what’s going on in the larger dataset regime.
> > >
> > >
> > >
> > > -Tyson
> > >
> > >
> > >
> > > From: Yingyi Bu [mailto:buyingyi@gmail.com]
> > > Sent: Tuesday, December 20, 2016 4:30 PM
> > > To: dev@asterixdb.apache.org
> > > Cc: Michael Carey <mjcarey@ics.uci.edu>; Tyson Condie <
> > > tcondie.ucla@gmail.com>
> > > Subject: Re: Time of Multiple Joins in AsterixDB
> > >
> > >
> > >
> > > Hi Mingda,
> > >
> > >
> > >
> > >      It looks that you didn't attach the pdf?
> > >
> > >      Thanks!
> > >
> > >
> > >
> > > Best,
> > >
> > > Yingyi
> > >
> > >
> > >
> > > On Tue, Dec 20, 2016 at 4:15 PM, mingda li <limingda1993@gmail.com
> > > <mailto:limingda1993@gmail.com> > wrote:
> > >
> > > Sorry for the wrong version of cc.conf. I convert it to pdf version as
> > > attachment.
> > >
> > >
> > >
> > > On Tue, Dec 20, 2016 at 4:06 PM, mingda li <limingda1993@gmail.com
> > > <mailto:limingda1993@gmail.com> > wrote:
> > >
> > > Dear all,
> > >
> > >
> > >
> > > I am testing different systems' (AsterixDB, Spark, Hive, Pig) multiple
> > > joins to see if there is a big difference with different join order.
> This
> > > is the reason for our research on multiple join and the result will
> > apppear
> > > in our paper which is to be submitted to VLDB soon. Could you help us
> to
> > > make sure that the test results make sense for AsterixDB?
> > >
> > >
> > >
> > > We configure the AsterixDB 0.8.9 ( use asterix-server-0.8.9-SNAPSHOT-
> > binary-assembly)
> > > in our cluster of 16 machines, each with a 3.40GHz i7 processor (4
> cores
> > > and 2 hyper-threads per core), 32GB of RAM and 1TB of disk capacity.
> The
> > > operating system is 64-bit Ubuntu 12.04. JDK version 1.8.0. During
> > > configuration, I follow the NCService instruction here
> > > https://ci.apache.org/projects/asterixdb/ncservice.html. And I set the
> > > cc.conf as in attachment. (Each node work as nc and the first node also
> > > work as cc).
> > >
> > >
> > >
> > > For experiment, we use 3 fact tables from TPC-DS: inventory;
> > > catalog_sales; catalog_returns with TPC-DS scale factor 1g and 10g. The
> > > multiple join query we use in AsterixDB are as following:
> > >
> > >
> > >
> > > Good Join Order: SELECT COUNT(*) FROM (SELECT * FROM catalog_sales cs1
> > > JOIN catalog_returns cr1
> > >
> > >  ON (cs1.cs_order_number = cr1.cr_order_number AND cs1.cs_item_sk =
> > > cr1.cr_item_sk))  m1 JOIN inventory i1 ON i1.inv_item_sk =
> > cs1.cs_item_sk;
> > >
> > >
> > >
> > > Bad Join Order: SELECT COUNT(*) FROM (SELECT * FROM catalog_sales cs1
> > JOIN
> > > inventory i1 ON cs1.cs_item_sk = i1.inv_item_sk) m1 JOIN
> catalog_returns
> > > cr1 ON (cs1.cs_order_number = cr1.cr_order_number AND cs1.cs_item_sk =
> > > cr1.cr_item_sk);
> > >
> > >
> > >
> > > We load the data to AsterixDB firstly and run the two different
> queries.
> > > (The complete version of all queries for AsterixDB is in attachment)
> We
> > > assume the data has already been stored in AsterixDB and only count the
> > > time for multiple join.
> > >
> > >
> > >
> > > Meanwhile, we use the same dataset and query to test Spark, Pig and
> Hive.
> > > The result is shown in the attachment's figure. And you can find
> > > AsterixDB's time is always better than others  no matter good or bad
> > > order:-) (BTW, the y scale of figure is time in log scale. You can see
> > the
> > > time by the label of each bar.)
> > >
> > >
> > >
> > > Thanks for your help.
> > >
> > >
> > >
> > > Bests,
> > >
> > > Mingda
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
>

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