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Subject: Re: quick repair tool question
From: Jonathan Colby <jonathan.colby@gmail.com>
In-Reply-To: <7BB54C70-ED2F-47FC-BAE9-1CA8DEC57F53@gmail.com>
Date: Tue, 12 Apr 2011 17:11:39 +0200
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Message-Id: <694526B6-C5D6-42AC-8DAD-59AF82FCCE38@gmail.com>
References: <7BB54C70-ED2F-47FC-BAE9-1CA8DEC57F53@gmail.com>
To: user@cassandra.apache.org

I think I answered the question myself.  The data is streaming in from =
other replicas even though the node's data dir was emptied out (system =
dir was left alone).  =20

I'm not sure if this is the "kosher" way to rebuild the sstable data, =
but it seemed to work.  =20

/var/lib/cassandra/data # /opt/cassandra/bin/nodetool -h $HOSTNAME -p =
35014 netstats=20
Mode: Normal
Not sending any streams.
Streaming from: /10.46.108.100
  DFS: =
/var/lib/cassandra/data/DFS/main-f-85-Data.db/(101772144,192460041),(19246=
0041,267088244)
	 progress=3D0/165316100 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-86-Data.db/(118410757,194489915),(19448=
9915,247653739)
	 progress=3D0/129242982 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-40-Data.db/(4823893695,4850323665),(485=
0323665,7818579650)
	 progress=3D0/2994685955 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-89-Data.db/(0,707948),(707948,2011040)
	 progress=3D0/2011040 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-70-Data.db/(778069440,1015544852),(1015=
544852,1200443249)
	 progress=3D0/422373809 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-71-Data.db/(119366025,132069485),(13206=
9485,156787816)
	 progress=3D0/37421791 - 0%
Streaming from: /10.47.108.100
  DFS: =
/var/lib/cassandra/data/DFS/main-f-365-Data.db/(0,24748050),(126473995,170=
409694)
	 progress=3D0/68683749 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-367-Data.db/(0,935041),(935041,2238133)=

	 progress=3D0/2238133 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-366-Data.db/(0,4608808),(37713613,46884=
920)
	 progress=3D0/13780115 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-242-Data.db/(0,1057203157),(3307900143,=
4339490352)
	 progress=3D0/2088793366 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-352-Data.db/(0,19422069),(81246761,1225=
37002)
	 progress=3D0/60712310 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-225-Data.db/(0,1580865981),(4540941750,=
6024843721)
	 progress=3D0/3064767952 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-349-Data.db/(0,21720053),(54115405,7171=
6716)
	 progress=3D0/39321364 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-364-Data.db/(0,72606213),(175419693,238=
159626)
	 progress=3D0/135346146 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-363-Data.db/(0,1184983783),(3458591846,=
4556646617)
	 progress=3D0/2283038554 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-368-Data.db/(0,756228),(756228,1626647)=

	 progress=3D0/1626647 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-361-Data.db/(48074007,78009236)
	 progress=3D0/29935229 - 0%
  DFS: =
/var/lib/cassandra/data/DFS/main-f-226-Data.db/(0,3111952321),(8592898278,=
11484622800)
	 progress=3D0/6003676843 - 0%
Pool Name                    Active   Pending      Completed
Commands                        n/a         0           5765
Responses                       n/a         0           9811
On Apr 12, 2011, at 4:59 PM, Jonathan Colby wrote:

> does a repair just compare the existing data from sstables on the node =
being repaired, or will it "figure out" which data this node should have =
and copy it in?
>=20
> I'm trying to refresh all the data for a given node (without =
reassigning the token) starting with an emptied out data directory.
>=20
> I tried nodetool move, but if I give the same token it previously was =
assigned it doesn't seem to trigger a decommission/bootstrap.=20
>=20
> Thanks.