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https://issues.apache.org/jira/browse/CASSANDRA-7701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Brandon Williams resolved CASSANDRA-7701.
-----------------------------------------
Resolution: Not a Problem
I'm the kind of idiot that leaves the repro running in the background and
doesn't notice it.
> Infinite flush loop
> -------------------
>
> Key: CASSANDRA-7701
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7701
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Brandon Williams
> Fix For: 2.1.0
>
>
> If you run the repro from CASSANDRA-7695, you can get an infinite flush loop:
> {noformat}
> NFO 20:46:34 Compacting
> [SSTableReader(path='/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1442-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1443-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1440-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1441-Data.db')]
> INFO 20:46:34 Enqueuing flush of compactions_in_progress: 180 (0%) on-heap,
> 0 (0%) off-heap
> INFO 20:46:34 Writing Memtable-compactions_in_progress@842537816(0
> serialized bytes, 1 ops, 0%/0% of on/off-heap limit)
> INFO 20:46:34 Completed flushing
> /var/lib/cassandra/data/system/compactions_in_progress-55080ab05d9c388690a4acb25fe1f77b/system-compactions_in_progress-ka-954-Data.db
> (42 bytes) for commitlog position ReplayPosition(segmentId=1407269935245,
> position=12803233)
> INFO 20:46:34 Compacted 4 sstables to
> [/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1444,].
> 9,664 bytes to 2,416 (~25% of original) in 37ms = 0.062272MB/s. 4 total
> partitions merged to 1. Partition merge counts were {4:1, }
> INFO 20:46:35 Enqueuing flush of put_test: 87040444 (33%) on-heap, 0 (0%)
> off-heap
> INFO 20:46:35 Writing Memtable-put_test@418061108(512021 serialized bytes,
> 356 ops, 33%/0% of on/off-heap limit)
> INFO 20:46:35 Completed flushing
> /var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1445-Data.db
> (2416 bytes) for commitlog position ReplayPosition(segmentId=1407269935247,
> position=30214640)
> INFO 20:46:37 Enqueuing flush of put_test: 87040444 (33%) on-heap, 0 (0%)
> off-heap
> INFO 20:46:37 Writing Memtable-put_test@1715686331(512021 serialized bytes,
> 348 ops, 33%/0% of on/off-heap limit)
> INFO 20:46:37 Completed flushing
> /var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1446-Data.db
> (2416 bytes) for commitlog position ReplayPosition(segmentId=1407269935250,
> position=19460288)
> INFO 20:46:39 Enqueuing flush of put_test: 87040444 (33%) on-heap, 0 (0%)
> off-heap
> INFO 20:46:39 Writing Memtable-put_test@295716698(512021 serialized bytes,
> 344 ops, 33%/0% of on/off-heap limit)
> INFO 20:46:39 Completed flushing
> /var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1447-Data.db
> (2416 bytes) for commitlog position ReplayPosition(segmentId=1407269935253,
> position=7681712)
> INFO 20:46:39 Enqueuing flush of compactions_in_progress: 1333 (0%) on-heap,
> 0 (0%) off-heap
> INFO 20:46:39 Writing Memtable-compactions_in_progress@833384128(143
> serialized bytes, 9 ops, 0%/0% of on/off-heap limit)
> INFO 20:46:39 Completed flushing
> /var/lib/cassandra/data/system/compactions_in_progress-55080ab05d9c388690a4acb25fe1f77b/system-compactions_in_progress-ka-955-Data.db
> (166 bytes) for commitlog position ReplayPosition(segmentId=1407269935253,
> position=8194154)
> INFO 20:46:39 Compacting
> [SSTableReader(path='/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1447-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1446-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1445-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1444-Data.db')]
> INFO 20:46:39 Compacting
> [SSTableReader(path='/var/lib/cassandra/data/system/compactions_in_progress-55080ab05d9c388690a4acb25fe1f77b/system-compactions_in_progress-ka-952-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/system/compactions_in_progress-55080ab05d9c388690a4acb25fe1f77b/system-compactions_in_progress-ka-955-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/system/compactions_in_progress-55080ab05d9c388690a4acb25fe1f77b/system-compactions_in_progress-ka-953-Data.db'),
>
> SSTableReader(path='/var/lib/cassandra/data/system/compactions_in_progress-55080ab05d9c388690a4acb25fe1f77b/system-compactions_in_progress-ka-954-Data.db')]
> INFO 20:46:39 Enqueuing flush of compactions_in_progress: 180 (0%) on-heap,
> 0 (0%) off-heap
> INFO 20:46:39 Writing Memtable-compactions_in_progress@1180400490(0
> serialized bytes, 1 ops, 0%/0% of on/off-heap limit)
> INFO 20:46:39 Compacted 4 sstables to
> [/var/lib/cassandra/data/system/compactions_in_progress-55080ab05d9c388690a4acb25fe1f77b/system-compactions_in_progress-ka-956,].
> 462 bytes to 166 (~35% of original) in 44ms = 0.003598MB/s. 5 total
> partitions merged to 1. Partition merge counts were {1:3, 2:1, }
> INFO 20:46:39 Completed flushing
> /var/lib/cassandra/data/system/compactions_in_progress-55080ab05d9c388690a4acb25fe1f77b/system-compactions_in_progress-ka-957-Data.db
> (42 bytes) for commitlog position ReplayPosition(segmentId=1407269935253,
> position=12803233)
> INFO 20:46:39 Compacted 4 sstables to
> [/var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1448,].
> 9,664 bytes to 2,416 (~25% of original) in 68ms = 0.033883MB/s. 4 total
> partitions merged to 1. Partition merge counts were {4:1, }
> INFO 20:46:40 Enqueuing flush of put_test: 87040444 (33%) on-heap, 0 (0%)
> off-heap
> INFO 20:46:40 Writing Memtable-put_test@553655581(512021 serialized bytes,
> 358 ops, 33%/0% of on/off-heap limit)
> INFO 20:46:40 Completed flushing
> /var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1449-Data.db
> (2416 bytes) for commitlog position ReplayPosition(segmentId=1407269935255,
> position=32775200)
> INFO 20:46:42 Enqueuing flush of put_test: 87040444 (33%) on-heap, 0 (0%)
> off-heap
> INFO 20:46:42 Writing Memtable-put_test@1630754028(512021 serialized bytes,
> 354 ops, 34%/0% of on/off-heap limit)
> INFO 20:46:42 Completed flushing
> /var/lib/cassandra/data/cass_test/put_test-3252eb901cde11e4a736517bcdb23258/cass_test-put_test-ka-1450-Data.db
> (2416 bytes) for commitlog position ReplayPosition(segmentId=1407269935258,
> position=23557184)
> {noformat}
> This keeps going long after the run is complete. Restarting the node stops
> the loop.
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