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https://issues.apache.org/jira/browse/CASSANDRA-8248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Joshua McKenzie updated CASSANDRA-8248:
---------------------------------------
Attachment: 8248_v1.txt
Attaching patch that releases references to SSTR during SSTableWriter.openEarly
if there's trouble. See discussion on CASSANDRA-8061 - this came up during
inspection and could lead to leaks.
> Possible memory leak
> ---------------------
>
> Key: CASSANDRA-8248
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8248
> Project: Cassandra
> Issue Type: Bug
> Reporter: Alexander Sterligov
> Assignee: Shawn Kumar
> Attachments: 8248_v1.txt, thread_dump
>
>
> Sometimes during repair cassandra starts to consume more memory than expected.
> Total amount of data on node is about 20GB.
> Size of the data directory is 66GC because of snapshots.
> Top reports:
> {noformat}
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 15724 loadbase 20 0 493g 55g 44g S 28 44.2 4043:24 java
> {noformat}
> At the /proc/15724/maps there are a lot of deleted file maps
> {quote}
> 7f63a6102000-7f63a6332000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a6332000-7f63a6562000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a6562000-7f63a6792000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a6792000-7f63a69c2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a69c2000-7f63a6bf2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a6bf2000-7f63a6e22000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a6e22000-7f63a7052000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a7052000-7f63a7282000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a7282000-7f63a74b2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a74b2000-7f63a76e2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a76e2000-7f63a7912000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a7912000-7f63a7b42000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a7b42000-7f63a7d72000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a7d72000-7f63a7fa2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a7fa2000-7f63a81d2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a81d2000-7f63a8402000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a8402000-7f63a8622000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a8622000-7f63a8842000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a8842000-7f63a8a62000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a8a62000-7f63a8c82000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a8c82000-7f63a8ea2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a8ea2000-7f63a90c2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> 7f63a90c2000-7f63a92e2000 r--s 00000000 08:21 9442763
> /ssd/cassandra/data/iss/feedback_history-d32bc7e048c011e49b989bc3e8a5a440/iss-feedback_history-tmplink-ka-328671-Index.db
> (deleted)
> {quote}
> {quote}
> $ sudo grep deleted /proc/15724/maps | wc -l
> 640118
> {quote}
> {quote}
> $ sudo grep -v deleted /proc/15724/maps | wc -l
> 303340
> {quote}
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