RocksDB in Kafka stream reporting no space when there is space available
I have a Streams application with a GlobalKtable backed by RocksDB that’s failing. I was originally getting the error described in https://issues.apache.org/jira/browse/KAFKA-6327, so I upgraded RocksDB to v5.14.2, which now gives a more explicit error: org.rocksdb.RocksDBException: While open a file for appending: /kafka_streams/...snip.../000295.sst: No space left on device
The directory in which the RocksDB spills to disk (a file mount on RHEL) seems to have ample space (Size: 5.4G Used: 2.8G Available: 2.6G Use%: 52%). I'm assuming that it's actually trying to allocate more than the remaining 2.6G, but that seems unlikely; there isn't that much data in the topic.
I found details on configuring RocksDB away from the defaults at https://docs.confluent.io/current/streams/developer-guide/config-streams.html#rocksdb-config-setter, but I don't see anything obvious that could potentially resolve the issue.
I haven't found any bug reports related to an issue like this, and I'm at a loss for troubleshooting next steps.
Edited to add:
I just ran the streams application on my local development machine against the same Kafka environment having the problem above. While the state stores were being loaded, the state store directory drifted up to a high of 3.1G and then settled at around 2.1G. It never got close to the 5G available on our development server. I haven't gotten any closer to finding an answer.
apache-kafka apache-kafka-streams rocksdb
asked Nov 15 '18 at 20:13
IcksterIckster
1,33441736
add a comment |
I have a Streams application with a GlobalKtable backed by RocksDB that’s failing. I was originally getting the error described in https://issues.apache.org/jira/browse/KAFKA-6327, so I upgraded RocksDB to v5.14.2, which now gives a more explicit error: org.rocksdb.RocksDBException: While open a file for appending: /kafka_streams/...snip.../000295.sst: No space left on device
The directory in which the RocksDB spills to disk (a file mount on RHEL) seems to have ample space (Size: 5.4G Used: 2.8G Available: 2.6G Use%: 52%). I'm assuming that it's actually trying to allocate more than the remaining 2.6G, but that seems unlikely; there isn't that much data in the topic.
I found details on configuring RocksDB away from the defaults at https://docs.confluent.io/current/streams/developer-guide/config-streams.html#rocksdb-config-setter, but I don't see anything obvious that could potentially resolve the issue.
I haven't found any bug reports related to an issue like this, and I'm at a loss for troubleshooting next steps.
Edited to add:
I just ran the streams application on my local development machine against the same Kafka environment having the problem above. While the state stores were being loaded, the state store directory drifted up to a high of 3.1G and then settled at around 2.1G. It never got close to the 5G available on our development server. I haven't gotten any closer to finding an answer.
apache-kafka apache-kafka-streams rocksdb
asked Nov 15 '18 at 20:13
IcksterIckster
1,33441736
add a comment |
I have a Streams application with a GlobalKtable backed by RocksDB that’s failing. I was originally getting the error described in https://issues.apache.org/jira/browse/KAFKA-6327, so I upgraded RocksDB to v5.14.2, which now gives a more explicit error: org.rocksdb.RocksDBException: While open a file for appending: /kafka_streams/...snip.../000295.sst: No space left on device
The directory in which the RocksDB spills to disk (a file mount on RHEL) seems to have ample space (Size: 5.4G Used: 2.8G Available: 2.6G Use%: 52%). I'm assuming that it's actually trying to allocate more than the remaining 2.6G, but that seems unlikely; there isn't that much data in the topic.
I found details on configuring RocksDB away from the defaults at https://docs.confluent.io/current/streams/developer-guide/config-streams.html#rocksdb-config-setter, but I don't see anything obvious that could potentially resolve the issue.
I haven't found any bug reports related to an issue like this, and I'm at a loss for troubleshooting next steps.
Edited to add:
I just ran the streams application on my local development machine against the same Kafka environment having the problem above. While the state stores were being loaded, the state store directory drifted up to a high of 3.1G and then settled at around 2.1G. It never got close to the 5G available on our development server. I haven't gotten any closer to finding an answer.
apache-kafka apache-kafka-streams rocksdb
asked Nov 15 '18 at 20:13
IcksterIckster
1,33441736
I have a Streams application with a GlobalKtable backed by RocksDB that’s failing. I was originally getting the error described in https://issues.apache.org/jira/browse/KAFKA-6327, so I upgraded RocksDB to v5.14.2, which now gives a more explicit error: org.rocksdb.RocksDBException: While open a file for appending: /kafka_streams/...snip.../000295.sst: No space left on device
The directory in which the RocksDB spills to disk (a file mount on RHEL) seems to have ample space (Size: 5.4G Used: 2.8G Available: 2.6G Use%: 52%). I'm assuming that it's actually trying to allocate more than the remaining 2.6G, but that seems unlikely; there isn't that much data in the topic.
I found details on configuring RocksDB away from the defaults at https://docs.confluent.io/current/streams/developer-guide/config-streams.html#rocksdb-config-setter, but I don't see anything obvious that could potentially resolve the issue.
I haven't found any bug reports related to an issue like this, and I'm at a loss for troubleshooting next steps.
Edited to add:
I just ran the streams application on my local development machine against the same Kafka environment having the problem above. While the state stores were being loaded, the state store directory drifted up to a high of 3.1G and then settled at around 2.1G. It never got close to the 5G available on our development server. I haven't gotten any closer to finding an answer.
apache-kafka apache-kafka-streams rocksdb
apache-kafka apache-kafka-streams rocksdb
asked Nov 15 '18 at 20:13
IcksterIckster
1,33441736
asked Nov 15 '18 at 20:13
IcksterIckster
1,33441736
edited Nov 17 '18 at 6:46
Ickster
asked Nov 15 '18 at 20:13
IcksterIckster
1,33441736
asked Nov 15 '18 at 20:13
IcksterIckster
1,33441736
asked Nov 15 '18 at 20:13
IcksterIckster
1,33441736
1,33441736
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
I never found an answer to why the disk usage in the deployed environment was behaving this way, but I eventually got more space allocated out of desperation; as the stream was processing, it consumed as much as 14GB of space before settling down around 3-4GB. I assume the disk space error was because RocksDB was trying to allocate space, not that it had written to it.
I've added a 'rule of thumb' that I should allocate 4x the disk space I expect for streaming applications.
answered Feb 25 at 19:42
IcksterIckster
1,33441736
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53327225%2frocksdb-in-kafka-stream-reporting-no-space-when-there-is-space-available%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I never found an answer to why the disk usage in the deployed environment was behaving this way, but I eventually got more space allocated out of desperation; as the stream was processing, it consumed as much as 14GB of space before settling down around 3-4GB. I assume the disk space error was because RocksDB was trying to allocate space, not that it had written to it.
I've added a 'rule of thumb' that I should allocate 4x the disk space I expect for streaming applications.
answered Feb 25 at 19:42
IcksterIckster
1,33441736
add a comment |
I never found an answer to why the disk usage in the deployed environment was behaving this way, but I eventually got more space allocated out of desperation; as the stream was processing, it consumed as much as 14GB of space before settling down around 3-4GB. I assume the disk space error was because RocksDB was trying to allocate space, not that it had written to it.
I've added a 'rule of thumb' that I should allocate 4x the disk space I expect for streaming applications.
answered Feb 25 at 19:42
IcksterIckster
1,33441736
add a comment |
I never found an answer to why the disk usage in the deployed environment was behaving this way, but I eventually got more space allocated out of desperation; as the stream was processing, it consumed as much as 14GB of space before settling down around 3-4GB. I assume the disk space error was because RocksDB was trying to allocate space, not that it had written to it.
I've added a 'rule of thumb' that I should allocate 4x the disk space I expect for streaming applications.
answered Feb 25 at 19:42
IcksterIckster
1,33441736
I never found an answer to why the disk usage in the deployed environment was behaving this way, but I eventually got more space allocated out of desperation; as the stream was processing, it consumed as much as 14GB of space before settling down around 3-4GB. I assume the disk space error was because RocksDB was trying to allocate space, not that it had written to it.
I've added a 'rule of thumb' that I should allocate 4x the disk space I expect for streaming applications.
answered Feb 25 at 19:42
IcksterIckster
1,33441736
answered Feb 25 at 19:42
IcksterIckster
1,33441736
answered Feb 25 at 19:42
IcksterIckster
1,33441736
answered Feb 25 at 19:42
IcksterIckster
1,33441736
1,33441736
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53327225%2frocksdb-in-kafka-stream-reporting-no-space-when-there-is-space-available%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
