Details
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Bug
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Status: Triage Needed
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Normal
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Resolution: Unresolved
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None
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None
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All
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None
Description
Hi All,
I getting errors on Cassandra 3.11.4 debug.log as below.
what could be the reason ? how to avoid these errors.??
I can see partition size is 1.9 MB. Heap size 16GB.
nodetool tablestats test_data.local_data -H
Total number of tables: 37
----------------
Keyspace : test_data
Read Count: 0
Read Latency: NaN ms
Write Count: 48776898
Write Latency: 1.534334614042082 ms
Pending Flushes: 2
Table: local_data
SSTable count: 84
Space used (live): 115.53 GiB
Space used (total): 115.53 GiB
Space used by snapshots (total): 165.45 KiB
Off heap memory used (total): 216.71 MiB
SSTable Compression Ratio: 0.5440445152549487
Number of partitions (estimate): 139647
Memtable cell count: 1495900
Memtable data size: 167.87 MiB
Memtable off heap memory used: 174.38 MiB
Memtable switch count: 2016
Local read count: 0
Local read latency: NaN ms
Local write count: 48777246
Local write latency: 1.580 ms
Pending flushes: 2
Percent repaired: 0.0
Bloom filter false positives: 0
Bloom filter false ratio: 0.00000
Bloom filter space used: 287.65 KiB
Bloom filter off heap memory used: 431.88 KiB
Index summary off heap memory used: 160.4 KiB
Compression metadata off heap memory used: 41.75 MiB
Compacted partition minimum bytes: 3974
Compacted partition maximum bytes: 1955666
Compacted partition mean bytes: 1109275
Average live cells per slice (last five minutes): NaN
Maximum live cells per slice (last five minutes): 0
Average tombstones per slice (last five minutes): NaN
Maximum tombstones per slice (last five minutes): 0
Dropped Mutations: 6 bytes
========================================
nodetool tablehistograms test_data local_data
test_data/local_data histograms
Percentile SSTables Write Latency Read Latency Partition Size Cell Count
(micros) (micros) (bytes)
50% 0.00 315.85 0.00 1358102 61214
75% 0.00 943.13 0.00 1955666 152321
95% 0.00 2816.16 0.00 1955666 152321
98% 0.00 8409.01 0.00 1955666 152321
99% 0.00 36157.19 0.00 1955666 152321
Min 0.00 73.46 0.00 3974 373
Max 0.00 557074.61 0.00 1955666 152321
====================================
nodetool info
ID : 2985f5ef-5b84-4654-91f6-dc459741e9fc
Gossip active : true
Thrift active : false
Native Transport active: true
Load : 117.25 GiB
Generation No : 1576230314
Uptime (seconds) : 15745
Heap Memory (MB) : 8040.00 / 16384.00
Off Heap Memory (MB) : 287.19
Data Center : dc1
Rack : rack1
Exceptions : 0
Key Cache : entries 36568, size 66.79 MiB, capacity 100 MiB, 26555 hits, 63045 requests, 0.421 recent hit rate, 14400 save period in seconds
Row Cache : entries 0, size 0 bytes, capacity 0 bytes, 0 hits, 0 requests, NaN recent hit rate, 0 save period in seconds
Counter Cache : entries 0, size 0 bytes, capacity 50 MiB, 0 hits, 0 requests, NaN recent hit rate, 7200 save period in seconds
Chunk Cache : entries 65024, size 3.97 GiB, capacity 3.97 GiB, 12839660 misses, 15296535 requests, 0.161 recent hit rate, 468.900 microseconds miss latency
Percent Repaired : 1.8637552068836277E-7%
Token : (invoke with T/-tokens to see all 256 tokens)
==================================
nodetool netstats
Mode: NORMAL
Not sending any streams.
Read Repair Statistics:
Attempted: 0
Mismatch (Blocking): 0
Mismatch (Background): 0
Pool Name Active Pending Completed Dropped
Large messages n/a 2 0 2
Small messages n/a 0 66196004 4
Gossip messages n/a 0 54691 30
=========================
INFO [CompactionExecutor:8] 2019-12-13 17:49:53,408 NoSpamLogger.java:91 - Maximum memory usage reached (4294967296), cannot allocate chunk of 1048576
INFO [CompactionExecutor:9] 2019-12-13 18:04:55,683 NoSpamLogger.java:91 - Maximum memory usage reached (4294967296), cannot allocate chunk of 1048576
INFO [CompactionExecutor:6] 2019-12-13 18:21:39,420 NoSpamLogger.java:91 - Maximum memory usage reached (4294967296), cannot allocate chunk of 1048576
INFO [CompactionExecutor:8] 2019-12-13 18:36:45,011 NoSpamLogger.java:91 - Maximum memory usage reached (4294967296), cannot allocate chunk of 1048576
INFO [CompactionExecutor:9] 2019-12-13 18:51:53,479 NoSpamLogger.java:91 - Maximum memory usage reached (4294967296), cannot allocate chunk of 1048576
INFO [CompactionExecutor:7] 2019-12-13 19:06:55,898 NoSpamLogger.java:91 - Maximum memory usage reached (4294967296), cannot allocate chunk of 1048576