Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 71634 invoked from network); 7 Jul 2010 22:08:48 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 7 Jul 2010 22:08:48 -0000 Received: (qmail 92186 invoked by uid 500); 7 Jul 2010 22:08:46 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 92148 invoked by uid 500); 7 Jul 2010 22:08:45 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 92140 invoked by uid 99); 7 Jul 2010 22:08:45 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 07 Jul 2010 22:08:45 +0000 X-ASF-Spam-Status: No, hits=2.2 required=10.0 tests=FREEMAIL_FROM,HTML_MESSAGE,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of nekotaroh@gmail.com designates 209.85.214.172 as permitted sender) Received: from [209.85.214.172] (HELO mail-iw0-f172.google.com) (209.85.214.172) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 07 Jul 2010 22:08:37 +0000 Received: by iwn38 with SMTP id 38so167864iwn.31 for ; Wed, 07 Jul 2010 15:08:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=Dc1QLuHP3DvpTJQTZF4EswSXeGCLB4zWKAKkTMgahcU=; b=ZvngFG9q8Xm5MEyaJr5F5au+1Nz7vPtUUrLX9NRhwNu26FtKkYbFToVE3XFPkp709A qIE77bk4IcorM/JWc4t5b/VZ49Dpd8gWMP8jwwkgQwzB4bHbPayWUGu7uCZatpdwtqGg DehzWYubOSgA5T0g3qPeb1h/x5uA2/wW6pSpI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=kbs0Rtw2R13ie+f02hwJiNU6OCxM9Rn0LLCePI1FIi6AILilpBpw1w0lXJXqWfIngY LM1TIKqOvn6Vq9ciQykTYiOgqO/xgKZVyGjBI++2DFBW1C0m7lGF+d1KhynQpCE4eSa2 mJTc5xid/yoZQcas+ZWSm8/H1Vy/fi/pl335g= MIME-Version: 1.0 Received: by 10.231.148.200 with SMTP id q8mr7376364ibv.10.1278540493241; Wed, 07 Jul 2010 15:08:13 -0700 (PDT) Received: by 10.231.174.1 with HTTP; Wed, 7 Jul 2010 15:08:13 -0700 (PDT) In-Reply-To: <215928109.438241278497144824.JavaMail.root@zimbra-corp-1-b7> References: <1645337180.437801278496275048.JavaMail.root@zimbra-corp-1-b7> <215928109.438241278497144824.JavaMail.root@zimbra-corp-1-b7> Date: Thu, 8 Jul 2010 07:08:13 +0900 Message-ID: Subject: Re: High CPU usage on all nodes without any read or write From: yoshiyuki kanno To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=0016e6407ebaee3d17048ad36766 X-Virus-Checked: Checked by ClamAV on apache.org --0016e6407ebaee3d17048ad36766 Content-Type: text/plain; charset=ISO-8859-1 Hi If the reason for this happening is compaction, changing the priority of the compaction thread might be effective. (cassandra0.6.3 offers this function) see also 0.6.3 changelog 2010/7/7 Olivier Rosello > Hi, > > We are testing Cassandra here, we would like to use it to store some data : > - about 1000 inserts / seconds in a CF "RAW" : > Column : TimeUUID (timeuuid of the insert, so 1000 new columns / second) > Row : YYYYMMDDHH of the insert (to minimize the size of rows, the biggest > one is 2GB data), for example for today at 1:30pm, the row of an insert will > be 2010070713 > - 4 CF we are using for indexes, all have the same structure > Column : TimeUUID of the insert (about 300 new columns per second, each > correspond to the same timeuuid of the CF "RAW". > Row : a String (Customer Id). > > The goal is for a Customer, to be able to get all its "RAW" for a time > range. > > Currently Cassandra is running on 4 nodes / 16 GB RAM each, 8 GB > JVM_MAX_MEM > > It runs correctly during several days. Last night, we started to have > timeout exception on insert and high cpu load on all nodes. > > We stopped inserts. But the CPU remains high (without any insert or read). > > We tried to stop and start nodes again, cpu remains high (between 100% and > 150%). > > > So currently, we can't add more data (timeout exceptions, due to high cpu > usage I guess). > > Could you help me to understand what's wrong ? :) > > Cheers, > > Olivier > > > Here are some data : > > We are using Cassandra 0.6.2 > > Address Status Load Range > Ring > > 170141183460469231731687303715884105728 > 192.168.0.1 Up 23.43 GB > 42535295865117307932921825928971026432 |<--| > 192.168.0.2 Up 23.12 GB > 85070591730234615865843651857942052864 | | > 192.168.0.3 Up 24.47 GB > 127605887595351923798765477786913079296 | | > 192.168.0.4 Up 24.14 GB > 170141183460469231731687303715884105728 |-->| > > > > Keyspace: system > Read Count: 8 > Read Latency: 60.38625 ms. > Write Count: 13 > Write Latency: 0.3583076923076923 ms. > Pending Tasks: 0 > Column Family: HintsColumnFamily > SSTable count: 1 > Space used (live): 103812 > Space used (total): 103812 > Memtable Columns Count: 0 > Memtable Data Size: 0 > Memtable Switch Count: 0 > Read Count: 5 > Read Latency: 83,440 ms. > Write Count: 0 > Write Latency: NaN ms. > Pending Tasks: 0 > Key cache capacity: 1 > Key cache size: 1 > Key cache hit rate: 0.6666666666666666 > Row cache: disabled > Compacted row minimum size: 0 > Compacted row maximum size: 0 > Compacted row mean size: 0 > > Column Family: LocationInfo > SSTable count: 3 > Space used (live): 3999 > Space used (total): 3999 > Memtable Columns Count: 7 > Memtable Data Size: 227 > Memtable Switch Count: 2 > Read Count: 3 > Read Latency: 21,964 ms. > Write Count: 13 > Write Latency: 0,358 ms. > Pending Tasks: 0 > Key cache capacity: 3 > Key cache size: 3 > Key cache hit rate: 0.2 > Row cache: disabled > Compacted row minimum size: 0 > Compacted row maximum size: 0 > Compacted row mean size: 0 > > ---------------- > Keyspace: MyKeySpace > Read Count: 5 > Read Latency: 22737.799 ms. > Write Count: 0 > Write Latency: NaN ms. > Pending Tasks: 0 > Column Family: INDEX1 > SSTable count: 5 > Space used (live): 1502023165 > Space used (total): 1502023165 > Memtable Columns Count: 0 > Memtable Data Size: 0 > Memtable Switch Count: 0 > Read Count: 1 > Read Latency: 0,876 ms. > Write Count: 0 > Write Latency: NaN ms. > Pending Tasks: 0 > Key cache capacity: 200000 > Key cache size: 0 > Key cache hit rate: NaN > Row cache: disabled > Compacted row minimum size: 0 > Compacted row maximum size: 0 > Compacted row mean size: 0 > > Column Family: INDEX2 > SSTable count: 3 > Space used (live): 1262977087 > Space used (total): 1262977087 > Memtable Columns Count: 0 > Memtable Data Size: 0 > Memtable Switch Count: 0 > Read Count: 1 > Read Latency: 0,547 ms. > Write Count: 0 > Write Latency: NaN ms. > Pending Tasks: 0 > Key cache capacity: 200000 > Key cache size: 0 > Key cache hit rate: NaN > Row cache: disabled > Compacted row minimum size: 0 > Compacted row maximum size: 0 > Compacted row mean size: 0 > > Column Family: RAW > SSTable count: 6 > Space used (live): 18867913004 > Space used (total): 18867913004 > Memtable Columns Count: 0 > Memtable Data Size: 0 > Memtable Switch Count: 0 > Read Count: 1 > Read Latency: 113685,183 ms. > Write Count: 0 > Write Latency: NaN ms. > Pending Tasks: 0 > Key cache capacity: 200000 > Key cache size: 3 > Key cache hit rate: 0.0 > Row cache: disabled > Compacted row minimum size: 215734 > Compacted row maximum size: 1055255881 > Compacted row mean size: 491170239 > > Column Family: INDEX3 > SSTable count: 6 > Space used (live): 1667728231 > Space used (total): 1667728231 > Memtable Columns Count: 0 > Memtable Data Size: 0 > Memtable Switch Count: 0 > Read Count: 1 > Read Latency: 1,241 ms. > Write Count: 0 > Write Latency: NaN ms. > Pending Tasks: 0 > Key cache capacity: 200000 > Key cache size: 0 > Key cache hit rate: NaN > Row cache: disabled > Compacted row minimum size: 0 > Compacted row maximum size: 0 > Compacted row mean size: 0 > > Column Family: INDEX4 > SSTable count: 7 > Space used (live): 2620328669 > Space used (total): 2620328669 > Memtable Columns Count: 0 > Memtable Data Size: 0 > Memtable Switch Count: 0 > Read Count: 1 > Read Latency: 1,148 ms. > Write Count: 0 > Write Latency: NaN ms. > Pending Tasks: 0 > Key cache capacity: 200000 > Key cache size: 0 > Key cache hit rate: NaN > Row cache: disabled > Compacted row minimum size: 0 > Compacted row maximum size: 0 > Compacted row mean size: 0 > --0016e6407ebaee3d17048ad36766 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi

If the reason for this happening is compaction,
changing the = priority of the compaction thread might be effective. (cassandra0.6.3 offer= s this function)

see also 0.6.3 changelog

2010/7/7 Olivier Rosello <orosello@corp.free.fr>
Hi,

We are testing Cassandra here, we would like to use it to store some data :=
- about 1000 inserts / seconds in a CF "RAW" :
=A0 Column : TimeUUID (timeuuid of the insert, so 1000 new columns / secon= d)
=A0 Row : YYYYMMDDHH of the insert (to minimize the size of rows, the bigg= est one is 2GB data), for example for today at 1:30pm, the row of an insert= will be 2010070713
- 4 CF we are using for indexes, all have the same structure
=A0 Column : TimeUUID of the insert (about 300 new columns per second, eac= h correspond to the same timeuuid of the CF "RAW".
=A0 Row : a String (Customer Id).

The goal is for a Customer, to be able to get all its "RAW" for a= time range.

Currently Cassandra is running on 4 nodes / 16 GB RAM each, 8 GB JVM_MAX_ME= M

It runs correctly during several days. Last night, we started to have timeo= ut exception on insert and high cpu load on all nodes.

We stopped inserts. But the CPU remains high (without any insert or read).<= br>
We tried to stop and start nodes again, cpu remains high (between 100% and = 150%).


So currently, we can't add more data (timeout exceptions, due to high c= pu usage I guess).

Could you help me to understand what's wrong ? :)

Cheers,

Olivier


Here are some data :

We are using Cassandra 0.6.2

Address =A0 =A0 =A0 Status =A0 =A0 Load =A0 =A0 =A0 =A0 =A0Range =A0 =A0 = =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Ring
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 170141183460469231731687303715884105728
192.168.0.1 =A0Up =A0 =A0 =A0 =A0 23.43 GB =A0 =A0 =A0425352958651173079329= 21825928971026432 =A0 =A0 |<--|
192.168.0.2 =A0Up =A0 =A0 =A0 =A0 23.12 GB =A0 =A0 =A0850705917302346158658= 43651857942052864 =A0 =A0 | =A0 |
192.168.0.3 =A0Up =A0 =A0 =A0 =A0 24.47 GB =A0 =A0 =A0127605887595351923798= 765477786913079296 =A0 =A0| =A0 |
192.168.0.4 =A0Up =A0 =A0 =A0 =A0 24.14 GB =A0 =A0 =A0170141183460469231731= 687303715884105728 =A0 =A0|-->|



Keyspace: system
=A0 =A0 =A0 =A0Read Count: 8
=A0 =A0 =A0 =A0Read Latency: 60.38625 ms.
=A0 =A0 =A0 =A0Write Count: 13
=A0 =A0 =A0 =A0Write Latency: 0.3583076923076923 ms.
=A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Column Family: HintsColumnFamily
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SSTable count: 1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (live): 103812
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (total): 103812
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Columns Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Data Size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Switch Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Count: 5
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Latency: 83,440 ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Latency: NaN ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache capacity: 1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache size: 1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache hit rate: 0.6666666666666666
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Row cache: disabled
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row minimum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row maximum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row mean size: 0

=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Column Family: LocationInfo
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SSTable count: 3
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (live): 3999
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (total): 3999
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Columns Count: 7
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Data Size: 227
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Switch Count: 2
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Count: 3
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Latency: 21,964 ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Count: 13
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Latency: 0,358 ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache capacity: 3
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache size: 3
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache hit rate: 0.2
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Row cache: disabled
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row minimum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row maximum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row mean size: 0

----------------
Keyspace: MyKeySpace
=A0 =A0 =A0 =A0Read Count: 5
=A0 =A0 =A0 =A0Read Latency: 22737.799 ms.
=A0 =A0 =A0 =A0Write Count: 0
=A0 =A0 =A0 =A0Write Latency: NaN ms.
=A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Column Family: INDEX1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SSTable count: 5
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (live): 1502023165
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (total): 1502023165
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Columns Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Data Size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Switch Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Count: 1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Latency: 0,876 ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Latency: NaN ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache capacity: 200000
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache hit rate: NaN
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Row cache: disabled
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row minimum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row maximum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row mean size: 0

=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Column Family: INDEX2
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SSTable count: 3
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (live): 1262977087
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (total): 1262977087
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Columns Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Data Size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Switch Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Count: 1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Latency: 0,547 ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Latency: NaN ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache capacity: 200000
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache hit rate: NaN
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Row cache: disabled
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row minimum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row maximum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row mean size: 0

=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Column Family: RAW
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SSTable count: 6
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (live): 18867913004
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (total): 18867913004
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Columns Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Data Size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Switch Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Count: 1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Latency: 113685,183 ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Latency: NaN ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache capacity: 200000
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache size: 3
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache hit rate: 0.0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Row cache: disabled
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row minimum size: 215734
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row maximum size: 1055255881
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row mean size: 491170239

=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Column Family: INDEX3
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SSTable count: 6
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (live): 1667728231
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (total): 1667728231
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Columns Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Data Size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Switch Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Count: 1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Latency: 1,241 ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Latency: NaN ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache capacity: 200000
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache hit rate: NaN
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Row cache: disabled
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row minimum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row maximum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row mean size: 0

=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Column Family: INDEX4
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SSTable count: 7
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (live): 2620328669
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Space used (total): 2620328669
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Columns Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Data Size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Memtable Switch Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Count: 1
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Read Latency: 1,148 ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Count: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Write Latency: NaN ms.
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Pending Tasks: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache capacity: 200000
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Key cache hit rate: NaN
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Row cache: disabled
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row minimum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row maximum size: 0
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Compacted row mean size: 0

--0016e6407ebaee3d17048ad36766--