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https://issues.apache.org/jira/browse/CASSANDRA-9235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14511129#comment-14511129
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Sergey Maznichenko commented on CASSANDRA-9235:
-----------------------------------------------
It happened when archivespace.file_storage2 had beed added.
KEYSPACE description:
CREATE KEYSPACE archivespace WITH replication = {'class':
'NetworkTopologyStrategy', 'DC1': '1', 'DC2': '1'} AND durable_writes = true;
CREATE TABLE archivespace.files (
id uuid PRIMARY KEY,
category decimal,
created timestamp,
data blob,
filename text
) WITH bloom_filter_fp_chance = 0.01
AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
AND comment = ''
AND compaction = {'min_threshold': '4', 'enabled': 'true', 'class':
'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy',
'max_threshold': '32'}
AND compression = {'sstable_compression':
'org.apache.cassandra.io.compress.LZ4Compressor'}
AND dclocal_read_repair_chance = 0.1
AND default_time_to_live = 0
AND gc_grace_seconds = 864000
AND max_index_interval = 2048
AND memtable_flush_period_in_ms = 0
AND min_index_interval = 128
AND read_repair_chance = 0.0
AND speculative_retry = '99.0PERCENTILE';
CREATE TABLE archivespace.file_storage (
key text,
chunk text,
value blob,
PRIMARY KEY (key, chunk)
) WITH COMPACT STORAGE
AND CLUSTERING ORDER BY (chunk ASC)
AND bloom_filter_fp_chance = 0.01
AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
AND comment = ''
AND compaction = {'sstable_size_in_mb': '512', 'min_threshold': '4',
'enabled': 'true', 'class':
'org.apache.cassandra.db.compaction.LeveledCompactionStrategy',
'max_threshold': '64'}
AND compression = {}
AND dclocal_read_repair_chance = 0.1
AND default_time_to_live = 0
AND gc_grace_seconds = 864000
AND max_index_interval = 2048
AND memtable_flush_period_in_ms = 0
AND min_index_interval = 128
AND read_repair_chance = 0.0
AND speculative_retry = '99.0PERCENTILE';
CREATE TABLE archivespace.file_storage2 (
key text,
chunk text,
value blob,
PRIMARY KEY (key, chunk)
) WITH CLUSTERING ORDER BY (chunk ASC)
AND bloom_filter_fp_chance = 0.1
AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
AND comment = ''
AND compaction = {'sstable_size_in_mb': '2048', 'min_threshold': '4',
'enabled': 'true', 'class':
'org.apache.cassandra.db.compaction.LeveledCompactionStrategy',
'max_threshold': '32'}
AND compression = {}
AND dclocal_read_repair_chance = 0.1
AND default_time_to_live = 0
AND gc_grace_seconds = 864000
AND max_index_interval = 2048
AND memtable_flush_period_in_ms = 0
AND min_index_interval = 128
AND read_repair_chance = 0.0
AND speculative_retry = '99.0PERCENTILE';
> nodetool compactionstats. Negative numbers in pending tasks
> ------------------------------------------------------------
>
> Key: CASSANDRA-9235
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9235
> Project: Cassandra
> Issue Type: Bug
> Components: API, Core
> Environment: CentOS 6.2 x64, Cassandra 2.1.4
> Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
> Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)
> Reporter: Sergey Maznichenko
> Assignee: Marcus Eriksson
> Priority: Minor
> Fix For: 2.1.5
>
>
> nodetool compactionstats
> pending tasks: -222222228
> I can see negative numbers in 'pending tasks' on all 8 nodes
> it looks like -222222228 + real number of pending tasks
> for example -222222128 for 100 real pending tasks
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